In Artifex Ghostscript through 9.25, the setpattern operator did not properly validate certain types. A specially crafted PostScript document could exploit this to crash Ghostscript or, possibly, execute arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of failure to check whether the Implementation of a pattern dictionary was a structure type.

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - ghostscript: /invalidaccess bypass after failed restore (699654) (CVE-2018-16509)

  - ghostscript: Improperly implemented security check in zsetdevice function in psi/zdevice.c     (CVE-2018-19409)

  - The getenv and filenameforall functions in Ghostscript 9.10 ignore the -dSAFER argument, which allows     remote attackers to read data via a crafted postscript file. (CVE-2013-5653)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - ghostscript: Improperly implemented security check in zsetdevice function in psi/zdevice.c     (CVE-2018-19409)

  - Integer overflow in the gs_heap_alloc_bytes function in base/gsmalloc.c in Ghostscript 9.15 and earlier     allows remote attackers to cause a denial of service (crash) via a crafted Postscript (ps) file, as     demonstrated by using the ps2pdf command, which triggers an out-of-bounds read or write. (CVE-2015-3228)

  - The pdf14_open function in base/gdevp14.c in Artifex Software, Inc. Ghostscript 9.20 allows remote     attackers to cause a denial of service (use-after-free and application crash) via a crafted file that is     mishandled in the color management module. (CVE-2016-10217)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The version of ghostscript installed on the remote host is prior to 9.25-5. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1598 advisory.

  - Artifex Ghostscript before 9.25 allowed a user-writable error exception table, which could be used by     remote attackers able to supply crafted PostScript to potentially overwrite or replace error handlers to     inject code. (CVE-2018-17183)

  - Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists because of an incomplete fix for CVE-2018-17183.
    (CVE-2018-17961)

  - Artifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of     system operators in the saved execution stack in an error object. (CVE-2018-18073)

  - Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors     involving the 1Policy operator. (CVE-2018-18284)

  - In Artifex Ghostscript through 9.25, the setpattern operator did not properly validate certain types. A     specially crafted PostScript document could exploit this to crash Ghostscript or, possibly, execute     arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of     failure to check whether the Implementation of a pattern dictionary was a structure type. (CVE-2018-19134)

  - An issue was discovered in Artifex Ghostscript before 9.26. LockSafetyParams is not checked correctly if     another device is used. (CVE-2018-19409)

  - psi/zdevice2.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access     restrictions because available stack space is not checked when the device remains the same.
    (CVE-2018-19475)

  - psi/zicc.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access     restrictions because of a setcolorspace type confusion. (CVE-2018-19476)

  - psi/zfjbig2.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access     restrictions because of a JBIG2Decode type confusion. (CVE-2018-19477)

  - A flaw was found in, ghostscript versions prior to 9.50, in the .pdf_hook_DSC_Creator procedure where it     did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A     specially crafted PostScript file could disable security protection and then have access to the file     system, or execute arbitrary commands. (CVE-2019-14811)

  - A flaw was found in all ghostscript versions 9.x before 9.50, in the .setuserparams2 procedure where it     did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A     specially crafted PostScript file could disable security protection and then have access to the file     system, or execute arbitrary commands. (CVE-2019-14812)

  - A flaw was found in ghostscript, versions 9.x before 9.50, in the setsystemparams procedure where it did     not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A specially     crafted PostScript file could disable security protection and then have access to the file system, or     execute arbitrary commands. (CVE-2019-14813)

  - A flaw was found in, ghostscript versions prior to 9.50, in the .pdfexectoken and other procedures where     it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. A     specially crafted PostScript file could disable security protection and then have access to the file     system, or execute arbitrary commands. (CVE-2019-14817)

  - A flaw was found in all versions of ghostscript 9.x before 9.50, where the `.charkeys` procedure, where it     did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An     attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate     privileges within the Ghostscript and access files outside of restricted areas or execute commands.
    (CVE-2019-14869)

  - It was found that the superexec operator was available in the internal dictionary in ghostscript before     9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the     file system outside of the constrains imposed by -dSAFER. (CVE-2019-3835)

  - It was found that the forceput operator could be extracted from the DefineResource method in ghostscript     before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access     to the file system outside of the constrains imposed by -dSAFER. (CVE-2019-3838)

  - It was found that in ghostscript some privileged operators remained accessible from various places after     the CVE-2019-6116 fix. A specially crafted PostScript file could use this flaw in order to, for example,     have access to the file system outside of the constrains imposed by -dSAFER. Ghostscript versions before     9.27 are vulnerable. (CVE-2019-3839)

  - In Artifex Ghostscript through 9.26, ephemeral or transient procedures can allow access to system     operators, leading to remote code execution. (CVE-2019-6116)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has ghostscript packages installed that are affected by multiple vulnerabilities:

  - An issue was discovered in Artifex Ghostscript before     9.26. LockSafetyParams is not checked correctly if     another device is used. (CVE-2018-19409)

  - It was discovered that the ghostscript .tempfile     function did not properly handle file permissions. An     attacker could possibly exploit this to exploit this to     bypass the -dSAFER protection and delete files or     disclose their content via a specially crafted     PostScript document. (CVE-2018-15908)

  - An issue was discovered in Artifex Ghostscript before     9.25. Incorrect restoration of privilege checking when     running out of stack during exception handling could be     used by attackers able to supply crafted PostScript to     execute code using the pipe instruction. This is due     to an incomplete fix for CVE-2018-16509.
    (CVE-2018-16802)

  - It was discovered that the ghostscript device cleanup     did not properly handle devices replaced with a null     device. An attacker could possibly exploit this to     bypass the -dSAFER protection and crash ghostscript or,     possibly, execute arbitrary code in the ghostscript     context via a specially crafted PostScript document.
    (CVE-2018-16541)

  - It was discovered that ghostscript did not properly     verify the key used in aesdecode. An attacker could     possibly exploit this to bypass the -dSAFER protection     and crash ghostscript or, possibly, execute arbitrary     code in the ghostscript context via a specially crafted     PostScript document. (CVE-2018-15911)

  - It was discovered that the ghostscript did not properly     restrict access to files open prior to enabling the
    -dSAFER mode. An attacker could possibly exploit this to     bypass the -dSAFER protection and disclose the content     of affected files via a specially crafted PostScript     document. (CVE-2018-16539)

  - Artifex Ghostscript before 9.25 allowed a user-writable     error exception table, which could be used by remote     attackers able to supply crafted PostScript to     potentially overwrite or replace error handlers to     inject code. (CVE-2018-17183)

  - Artifex Ghostscript 9.25 and earlier allows attackers to     bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists     because of an incomplete fix for CVE-2018-17183.
    (CVE-2018-17961)

  - Artifex Ghostscript allows attackers to bypass a sandbox     protection mechanism by leveraging exposure of system     operators in the saved execution stack in an error     object. (CVE-2018-18073)

  - Artifex Ghostscript 9.25 and earlier allows attackers to     bypass a sandbox protection mechanism via vectors     involving the 1Policy operator. (CVE-2018-18284)

  - It was found that RHSA-2018:2918 did not fully fix     CVE-2018-16509. An attacker could possibly exploit     another variant of the flaw and bypass the -dSAFER     protection to, for example, execute arbitrary shell     commands via a specially crafted PostScript document.
    (CVE-2018-16863)

  - In Artifex Ghostscript through 9.25, the setpattern     operator did not properly validate certain types. A     specially crafted PostScript document could exploit this     to crash Ghostscript or, possibly, execute arbitrary     code in the context of the Ghostscript process. This is     a type confusion issue because of failure to check     whether the Implementation of a pattern dictionary was a     structure type. (CVE-2018-19134)

  - It was discovered that the ghostscript .shfill operator     did not properly validate certain types. An attacker     could possibly exploit this to bypass the -dSAFER     protection and crash ghostscript or, possibly, execute     arbitrary code in the ghostscript context via a     specially crafted PostScript document. (CVE-2018-15909)

  - It was discovered that the ghostscript .type operator     did not properly validate its operands. A specially     crafted PostScript document could exploit this to crash     ghostscript or, possibly, execute arbitrary code in the     context of the ghostscript process. (CVE-2018-16511)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the ghostscript package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Artifex Ghostscript before     9.26. LockSafetyParams is not checked correctly if     another device is used.(CVE-2018-19409)

  - In Artifex Ghostscript 9.23 before 2018-08-24,     attackers able to supply crafted PostScript could use     uninitialized memory access in the aesdecode operator     to crash the interpreter or potentially execute     code.(CVE-2018-15911)

  - In Artifex Ghostscript before 9.24, attackers able to     supply crafted PostScript files could use incorrect     free logic in pagedevice replacement to crash the     interpreter.(CVE-2018-16541)

  - An issue was discovered in Artifex Ghostscript before     9.25. Incorrect 'restoration of privilege' checking     when running out of stack during exception handling     could be used by attackers able to supply crafted     PostScript to execute code using the 'pipe'     instruction. This is due to an incomplete fix for     CVE-2018-16509.(CVE-2018-16802)

  - Artifex Ghostscript before 9.25 allowed a user-writable     error exception table, which could be used by remote     attackers able to supply crafted PostScript to     potentially overwrite or replace error handlers to     inject code.(CVE-2018-17183)

  - Artifex Ghostscript allows attackers to bypass a     sandbox protection mechanism by leveraging exposure of     system operators in the saved execution stack in an     error object.(CVE-2018-18073)

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving the 1Policy operator.(CVE-2018-18284)

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists     because of an incomplete fix for     CVE-2018-17183.(CVE-2018-17961)

  - In Artifex Ghostscript through 9.25, the setpattern     operator did not properly validate certain types. A     specially crafted PostScript document could exploit     this to crash Ghostscript or, possibly, execute     arbitrary code in the context of the Ghostscript     process. This is a type confusion issue because of     failure to check whether the Implementation of a     pattern dictionary was a structure     type.(CVE-2018-19134)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - It was discovered that ghostscript did not properly     verify the key used in aesdecode. An attacker could     possibly exploit this to bypass the -dSAFER protection     and crash ghostscript or, possibly, execute arbitrary     code in the ghostscript context via a specially crafted     PostScript document.i1/4^CVE-2018-15911i1/4%0

  - An issue was discovered in Artifex Ghostscript before     9.25. Incorrect 'restoration of privilege' checking     when running out of stack during exception handling     could be used by attackers able to supply crafted     PostScript to execute code using the 'pipe'     instruction. This is due to an incomplete fix for     CVE-2018-16509.i1/4^CVE-2018-16802i1/4%0

  - It was found that RHSA-2018:2918 did not fully fix     CVE-2018-16509. An attacker could possibly exploit     another variant of the flaw and bypass the -dSAFER     protection to, for example, execute arbitrary shell     commands via a specially crafted PostScript     document.i1/4^CVE-2018-16863i1/4%0

  - Artifex Ghostscript before 9.25 allowed a user-writable     error exception table, which could be used by remote     attackers able to supply crafted PostScript to     potentially overwrite or replace error handlers to     inject code.i1/4^CVE-2018-17183i1/4%0

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists     because of an incomplete fix for     CVE-2018-17183.i1/4^CVE-2018-17961i1/4%0

  - Artifex Ghostscript allows attackers to bypass a     sandbox protection mechanism by leveraging exposure of     system operators in the saved execution stack in an     error object.i1/4^CVE-2018-18073i1/4%0

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving the 1Policy operator.i1/4^CVE-2018-18284i1/4%0

  - In Artifex Ghostscript through 9.25, the setpattern     operator did not properly validate certain types. A     specially crafted PostScript document could exploit     this to crash Ghostscript or, possibly, execute     arbitrary code in the context of the Ghostscript     process. This is a type confusion issue because of     failure to check whether the Implementation of a     pattern dictionary was a structure     type.i1/4^CVE-2018-19134i1/4%0

  - An issue was discovered in Artifex Ghostscript before     9.26. LockSafetyParams is not checked correctly if     another device is used.i1/4^CVE-2018-19409i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - It was discovered that the ghostscript .tempfile     function did not properly handle file permissions. An     attacker could possibly exploit this to exploit this to     bypass the -dSAFER protection and delete files or     disclose their content via a specially crafted     PostScript document.i1/4^CVE-2018-15908i1/4%0

  - It was discovered that the ghostscript .shfill operator     did not properly validate certain types. An attacker     could possibly exploit this to bypass the -dSAFER     protection and crash ghostscript or, possibly, execute     arbitrary code in the ghostscript context via a     specially crafted PostScript     document.i1/4^CVE-2018-15909i1/4%0

  - It was discovered that ghostscript did not properly     verify the key used in aesdecode. An attacker could     possibly exploit this to bypass the -dSAFER protection     and crash ghostscript or, possibly, execute arbitrary     code in the ghostscript context via a specially crafted     PostScript document.i1/4^CVE-2018-15911i1/4%0

  - It was discovered that the ghostscript .type operator     did not properly validate its operands. A specially     crafted PostScript document could exploit this to crash     ghostscript or, possibly, execute arbitrary code in the     context of the ghostscript process.i1/4^CVE-2018-16511i1/4%0

  - It was discovered that the ghostscript did not properly     restrict access to files open prior to enabling the
    -dSAFER mode. An attacker could possibly exploit this     to bypass the -dSAFER protection and disclose the     content of affected files via a specially crafted     PostScript document.i1/4^CVE-2018-16539i1/4%0

  - It was discovered that the ghostscript device cleanup     did not properly handle devices replaced with a null     device. An attacker could possibly exploit this to     bypass the -dSAFER protection and crash ghostscript or,     possibly, execute arbitrary code in the ghostscript     context via a specially crafted PostScript     document.i1/4^CVE-2018-16541i1/4%0

  - An issue was discovered in Artifex Ghostscript before     9.25. Incorrect 'restoration of privilege' checking     when running out of stack during exception handling     could be used by attackers able to supply crafted     PostScript to execute code using the 'pipe'     instruction. This is due to an incomplete fix for     CVE-2018-16509.i1/4^CVE-2018-16802i1/4%0

  - It was found that RHSA-2018:2918 did not fully fix     CVE-2018-16509. An attacker could possibly exploit     another variant of the flaw and bypass the -dSAFER     protection to, for example, execute arbitrary shell     commands via a specially crafted PostScript     document.i1/4^CVE-2018-16863i1/4%0

  - Artifex Ghostscript before 9.25 allowed a user-writable     error exception table, which could be used by remote     attackers able to supply crafted PostScript to     potentially overwrite or replace error handlers to     inject code.i1/4^CVE-2018-17183i1/4%0

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists     because of an incomplete fix for     CVE-2018-17183.i1/4^CVE-2018-17961i1/4%0

  - Artifex Ghostscript allows attackers to bypass a     sandbox protection mechanism by leveraging exposure of     system operators in the saved execution stack in an     error object.i1/4^CVE-2018-18073i1/4%0

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving the 1Policy operator.i1/4^CVE-2018-18284i1/4%0

  - In Artifex Ghostscript through 9.25, the setpattern     operator did not properly validate certain types. A     specially crafted PostScript document could exploit     this to crash Ghostscript or, possibly, execute     arbitrary code in the context of the Ghostscript     process. This is a type confusion issue because of     failure to check whether the Implementation of a     pattern dictionary was a structure     type.i1/4^CVE-2018-19134i1/4%0

  - An issue was discovered in Artifex Ghostscript before     9.26. LockSafetyParams is not checked correctly if     another device is used.i1/4^CVE-2018-19409i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - ghostscript: Incorrect 'restoration of privilege'     checking when running out of stack during exception     handling (CVE-2018-16802)

  - ghostscript: User-writable error exception table     (CVE-2018-17183)

  - ghostscript: Saved execution stacks can leak operator     arrays (incomplete fix for CVE-2018-17183)     (CVE-2018-17961)

  - ghostscript: Saved execution stacks can leak operator     arrays (CVE-2018-18073)

  - ghostscript: 1Policy operator allows a sandbox     protection bypass (CVE-2018-18284)

  - ghostscript: Type confusion in setpattern (700141)     (CVE-2018-19134)

  - ghostscript: Improperly implemented security check in     zsetdevice function in psi/zdevice.c (CVE-2018-19409)

  - ghostscript: Uninitialized memory access in the     aesdecode operator (699665) (CVE-2018-15911)

  - ghostscript: incomplete fix for CVE-2018-16509     (CVE-2018-16863)

  - ghostscript: incorrect access checking in temp file     handling to disclose contents of files (699658)     (CVE-2018-16539)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- rebase to latest upstream version 9.26

  - Security fix for CVE-2018-19478 CVE-2018-19134     CVE-2018-19477 CVE-2018-19476 CVE-2018-19475     CVE-2018-19409 CVE-2018-18284 CVE-2018-18073     CVE-2018-17961

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - ghostscript: Incorrect 'restoration of privilege'     checking when running out of stack during exception     handling (CVE-2018-16802)

  - ghostscript: User-writable error exception table     (CVE-2018-17183)

  - ghostscript: Saved execution stacks can leak operator     arrays (incomplete fix for CVE-2018-17183)     (CVE-2018-17961)

  - ghostscript: Saved execution stacks can leak operator     arrays (CVE-2018-18073)

  - ghostscript: 1Policy operator allows a sandbox     protection bypass (CVE-2018-18284)

  - ghostscript: Type confusion in setpattern (700141)     (CVE-2018-19134)

  - ghostscript: Improperly implemented security check in     zsetdevice function in psi/zdevice.c (CVE-2018-19409)

  - ghostscript: Uninitialized memory access in the     aesdecode operator (699665) (CVE-2018-15911)

  - ghostscript: incomplete fix for CVE-2018-16509     (CVE-2018-16863)

  - ghostscript: gssetresolution and gsgetresolution memory     corruption(CVE-2018-16543)

  - ghostscript: use-after-free in copydevice     handling(CVE-2018-16540)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - It was discovered that the ghostscript .tempfile     function did not properly handle file permissions. An     attacker could possibly exploit this to exploit this to     bypass the -dSAFER protection and delete files or     disclose their content via a specially crafted     PostScript document.i1/4^CVE-2018-15908i1/4%0

  - It was discovered that the ghostscript .shfill operator     did not properly validate certain types. An attacker     could possibly exploit this to bypass the -dSAFER     protection and crash ghostscript or, possibly, execute     arbitrary code in the ghostscript context via a     specially crafted PostScript     document.i1/4^CVE-2018-15909i1/4%0

  - It was discovered that ghostscript did not properly     verify the key used in aesdecode. An attacker could     possibly exploit this to bypass the -dSAFER protection     and crash ghostscript or, possibly, execute arbitrary     code in the ghostscript context via a specially crafted     PostScript document.i1/4^CVE-2018-15911i1/4%0

  - It was discovered that the ghostscript .type operator     did not properly validate its operands. A specially     crafted PostScript document could exploit this to crash     ghostscript or, possibly, execute arbitrary code in the     context of the ghostscript process.i1/4^CVE-2018-16511i1/4%0

  - It was discovered that the ghostscript did not properly     restrict access to files open prior to enabling the
    -dSAFER mode. An attacker could possibly exploit this     to bypass the -dSAFER protection and disclose the     content of affected files via a specially crafted     PostScript document.i1/4^CVE-2018-16539i1/4%0

  - It was discovered that the ghostscript device cleanup     did not properly handle devices replaced with a null     device. An attacker could possibly exploit this to     bypass the -dSAFER protection and crash ghostscript or,     possibly, execute arbitrary code in the ghostscript     context via a specially crafted PostScript     document.i1/4^CVE-2018-16541i1/4%0

  - An issue was discovered in Artifex Ghostscript before     9.25. Incorrect 'restoration of privilege' checking     when running out of stack during exception handling     could be used by attackers able to supply crafted     PostScript to execute code using the 'pipe'     instruction. This is due to an incomplete fix for     CVE-2018-16509.i1/4^CVE-2018-16802i1/4%0

  - It was found that RHSA-2018:2918 did not fully fix     CVE-2018-16509. An attacker could possibly exploit     another variant of the flaw and bypass the -dSAFER     protection to, for example, execute arbitrary shell     commands via a specially crafted PostScript     document.i1/4^CVE-2018-16863i1/4%0

  - Artifex Ghostscript before 9.25 allowed a user-writable     error exception table, which could be used by remote     attackers able to supply crafted PostScript to     potentially overwrite or replace error handlers to     inject code.i1/4^CVE-2018-17183i1/4%0

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving errorhandler setup. NOTE: this issue exists     because of an incomplete fix for     CVE-2018-17183.i1/4^CVE-2018-17961i1/4%0

  - Artifex Ghostscript allows attackers to bypass a     sandbox protection mechanism by leveraging exposure of     system operators in the saved execution stack in an     error object.i1/4^CVE-2018-18073i1/4%0

  - Artifex Ghostscript 9.25 and earlier allows attackers     to bypass a sandbox protection mechanism via vectors     involving the 1Policy operator.i1/4^CVE-2018-18284i1/4%0

  - In Artifex Ghostscript through 9.25, the setpattern     operator did not properly validate certain types. A     specially crafted PostScript document could exploit     this to crash Ghostscript or, possibly, execute     arbitrary code in the context of the Ghostscript     process. This is a type confusion issue because of     failure to check whether the Implementation of a     pattern dictionary was a structure     type.i1/4^CVE-2018-19134i1/4%0

  - An issue was discovered in Artifex Ghostscript before     9.26. LockSafetyParams is not checked correctly if     another device is used.i1/4^CVE-2018-19409i1/4%0

  - It was discovered that ghostscript did not properly     handle certain stack overflow error conditions. An     attacker could possibly exploit this to bypass the
    -dSAFER protection and crash ghostscript or, possibly,     execute arbitrary code in the ghostscript context via a     specially crafted PostScript     document.i1/4^CVE-2018-16542i1/4%0

  - It was discovered that the type of the     LockDistillerParams parameter is not properly verified.
    An attacker could possibly exploit this to bypass the
    -dSAFER protection and crash ghostscript or, possibly,     execute arbitrary code in the ghostscript context via a     specially crafted PostScript     document.i1/4^CVE-2018-15910i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ghostscript packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - ghostscript: Incorrect free logic in pagedevice     replacement (699664) (CVE-2018-16541)

  - ghostscript: Incorrect 'restoration of privilege'     checking when running out of stack during exception     handling (CVE-2018-16802)

  - ghostscript: User-writable error exception table     (CVE-2018-17183)

  - ghostscript: Saved execution stacks can leak operator     arrays (incomplete fix for CVE-2018-17183)     (CVE-2018-17961)

  - ghostscript: Saved execution stacks can leak operator     arrays (CVE-2018-18073)

  - ghostscript: 1Policy operator allows a sandbox     protection bypass (CVE-2018-18284)

  - ghostscript: Type confusion in setpattern (700141)     (CVE-2018-19134)

  - ghostscript: Improperly implemented security check in     zsetdevice function in psi/zdevice.c (CVE-2018-19409)

  - ghostscript: Uninitialized memory access in the     aesdecode operator (699665) (CVE-2018-15911)

  - ghostscript: incorrect access checking in temp file     handling to disclose contents of files (699658)     (CVE-2018-16539)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Some vulnerabilities were discovered in ghostscript, an interpreter for the PostScript language and for PDF.

CVE-2018-19134

The setpattern operator did not properly validate certain types. A specially crafted PostScript document could exploit this to crash Ghostscript or, possibly, execute arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of failure to check whether the Implementation of a pattern dictionary was a structure type.

CVE-2018-19478

Attempting to open a carefully crafted PDF file results in long-running computation. A sufficiently bad page tree can lead to us taking significant amounts of time when checking the tree for recursion.

For Debian 8 'Jessie', these problems have been fixed in version 9.06~dfsg-2+deb8u13.

We recommend that you upgrade your ghostscript packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Security Fix(es) :

  - ghostscript: Incorrect free logic in pagedevice     replacement (699664) (CVE-2018-16541)

  - ghostscript: Incorrect 'restoration of privilege'     checking when running out of stack during exception     handling (CVE-2018-16802)

  - ghostscript: User-writable error exception table     (CVE-2018-17183)

  - ghostscript: Saved execution stacks can leak operator     arrays (incomplete fix for CVE-2018-17183)     (CVE-2018-17961)

  - ghostscript: Saved execution stacks can leak operator     arrays (CVE-2018-18073)

  - ghostscript: 1Policy operator allows a sandbox     protection bypass (CVE-2018-18284)

  - ghostscript: Type confusion in setpattern (700141)     (CVE-2018-19134)

  - ghostscript: Improperly implemented security check in     zsetdevice function in psi/zdevice.c (CVE-2018-19409)

  - ghostscript: Uninitialized memory access in the     aesdecode operator (699665) (CVE-2018-15911)

Bug Fix(es) :

  - It has been found that ghostscript-9.07-31.el7_6.1     introduced regression during the handling of shading     objects, causing a 'Dropping incorrect smooth shading     object' warning. With this update, the regression has     been fixed and the described problem no longer occurs.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-3834 advisory.

    - Resolves: #1654621 - CVE-2018-16541 ghostscript: incorrect free logic in       pagedevice replacement (699664)
    - Resolves: #1650210 - CVE-2018-17183 ghostscript: User-writable error       exception table
    - Resolves: #1645516 - CVE-2018-18073 ghostscript: saved execution stacks       can leak operator arrays
    - Resolves: #1648891 - CVE-2018-17961 ghostscript: saved execution stacks       can leak operator arrays (incomplete fix for CVE-2018-17183)
    - Resolves: #1643115 - CVE-2018-18284 ghostscript: 1Policy operator       allows a sandbox protection bypass
    - Resolves: #1655937 - CVE-2018-19134 ghostscript: Type confusion in       setpattern (700141)
    - Resolves: #1651149 - CVE-2018-15911 ghostscript: uninitialized memory       access in the aesdecode operator (699665)
    - Resolves: #1650060 - CVE-2018-16802 ghostscript: Incorrect 'restoration of       privilege' checking when running out of stack during exception handling

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update for ghostscript is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The Ghostscript suite contains utilities for rendering PostScript and PDF documents. Ghostscript translates PostScript code to common bitmap formats so that the code can be displayed or printed.

Security Fix(es) :

* ghostscript: Incorrect free logic in pagedevice replacement (699664) (CVE-2018-16541)

* ghostscript: Incorrect 'restoration of privilege' checking when running out of stack during exception handling (CVE-2018-16802)

* ghostscript: User-writable error exception table (CVE-2018-17183)

* ghostscript: Saved execution stacks can leak operator arrays (incomplete fix for CVE-2018-17183) (CVE-2018-17961)

* ghostscript: Saved execution stacks can leak operator arrays (CVE-2018-18073)

* ghostscript: 1Policy operator allows a sandbox protection bypass (CVE-2018-18284)

* ghostscript: Type confusion in setpattern (700141) (CVE-2018-19134)

* ghostscript: Improperly implemented security check in zsetdevice function in psi/zdevice.c (CVE-2018-19409)

* ghostscript: Uninitialized memory access in the aesdecode operator (699665) (CVE-2018-15911)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Tavis Ormandy (Google Project Zero) for reporting CVE-2018-16541.

Bug Fix(es) :

* It has been found that ghostscript-9.07-31.el7_6.1 introduced regression during the handling of shading objects, causing a 'Dropping incorrect smooth shading object' warning. With this update, the regression has been fixed and the described problem no longer occurs.
(BZ#1657822)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3834 advisory.

  - ghostscript: Uninitialized memory access in the aesdecode operator (699665) (CVE-2018-15911)

  - ghostscript: Incorrect free logic in pagedevice replacement (699664) (CVE-2018-16541)

  - ghostscript: Incorrect restoration of privilege checking when running out of stack during exception     handling (CVE-2018-16802)

  - ghostscript: User-writable error exception table (CVE-2018-17183)

  - ghostscript: Saved execution stacks can leak operator arrays (incomplete fix for CVE-2018-17183)     (CVE-2018-17961)

  - ghostscript: Saved execution stacks can leak operator arrays (CVE-2018-18073)

  - ghostscript: 1Policy operator allows a sandbox protection bypass (CVE-2018-18284)

  - ghostscript: Type confusion in setpattern (700141) (CVE-2018-19134)

  - ghostscript: Improperly implemented security check in zsetdevice function in psi/zdevice.c     (CVE-2018-19409)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Several vulnerabilities were discovered in Ghostscript, the GPL PostScript/PDF interpreter, which may result in denial of service or the execution of arbitrary code if a malformed Postscript file is processed (despite the -dSAFER sandbox being enabled).

This update rebases ghostscript for stretch to the upstream version 9.26 which includes additional changes.

The version of Artifex Ghostscript installed on the remote Windows host is prior to 9.26. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Severity
198835	RHEL 5 : ghostscript (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
198822	RHEL 6 : ghostscript (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
146633	Amazon Linux 2 : ghostscript (ALAS-2021-1598)	Nessus	Amazon Linux Local Security Checks	critical
127227	NewStart CGSL CORE 5.04 / MAIN 5.04 : ghostscript Multiple Vulnerabilities (NS-SA-2019-0046)	Nessus	NewStart CGSL Local Security Checks	critical
124887	EulerOS Virtualization for ARM 64 3.0.1.0 : ghostscript (EulerOS-SA-2019-1384)	Nessus	Huawei Local Security Checks	critical
123895	EulerOS Virtualization 2.5.4 : ghostscript (EulerOS-SA-2019-1209)	Nessus	Huawei Local Security Checks	critical
123891	EulerOS Virtualization 2.5.3 : ghostscript (EulerOS-SA-2019-1205)	Nessus	Huawei Local Security Checks	critical
122376	EulerOS 2.0 SP2 : ghostscript (EulerOS-SA-2019-1049)	Nessus	Huawei Local Security Checks	critical
122284	Fedora 28 : ghostscript (2019-82acb29c1b)	Nessus	Fedora Local Security Checks	critical
122169	EulerOS 2.0 SP3 : ghostscript (EulerOS-SA-2019-1022)	Nessus	Huawei Local Security Checks	critical
122103	Fedora 29 : ghostscript (2019-077a3f23c0)	Nessus	Fedora Local Security Checks	critical
121276	EulerOS Virtualization 2.5.1 : ghostscript (EulerOS-SA-2019-1016)	Nessus	Huawei Local Security Checks	critical
120992	EulerOS 2.0 SP5 : ghostscript (EulerOS-SA-2019-1004)	Nessus	Huawei Local Security Checks	critical
119901	EulerOS Virtualization 2.5.2 : ghostscript (EulerOS-SA-2018-1412)	Nessus	Huawei Local Security Checks	critical
119890	Debian DLA-1620-1 : ghostscript security update	Nessus	Debian Local Security Checks	high
119883	Scientific Linux Security Update : ghostscript on SL7.x x86_64 (20181217)	Nessus	Scientific Linux Local Security Checks	critical
119757	Oracle Linux 7 : ghostscript (ELSA-2018-3834)	Nessus	Oracle Linux Local Security Checks	critical
119754	CentOS 7 : ghostscript (CESA-2018:3834)	Nessus	CentOS Local Security Checks	critical
119736	RHEL 7 : ghostscript (RHSA-2018:3834)	Nessus	Red Hat Local Security Checks	critical
119269	Debian DSA-4346-1 : ghostscript - security update	Nessus	Debian Local Security Checks	critical
119240	Artifex Ghostscript < 9.26 PostScript Multiple Vulnerabilities	Nessus	Windows	critical

Detections

Analytics

CVE-2018-19134

high

Tenable Plugins

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

high

critical

critical

critical

critical

critical

critical