Integer overflow in the WriteProlog function in texttops in CUPS before 1.3.9 allows remote attackers to execute arbitrary code via a crafted PostScript file that triggers a heap-based buffer overflow.

From Red Hat Security Advisory 2009:0308 :

Updated cups packages that fix a security issue are now available for Red Hat Enterprise Linux 3.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The Common UNIX(r) Printing System (CUPS) provides a portable printing layer for UNIX operating systems.

The CUPS security advisory, RHSA-2008:0937, stated that it fixed CVE-2008-3640 for Red Hat Enterprise Linux 3, 4, and 5. It was discovered this flaw was not properly fixed on Red Hat Enterprise Linux 3, however. (CVE-2009-0577)

These new packages contain a proper fix for CVE-2008-3640 on Red Hat Enterprise Linux 3. Red Hat Enterprise Linux 4 and 5 already contain the appropriate fix for this flaw and do not need to be updated.

Users of cups should upgrade to these updated packages, which contain a backported patch to correct this issue.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2008-0937 advisory.

    - Applied patch to fix CVE-2008-3639 (STR #2918, bug #464721).
    - Applied patch to fix CVE-2008-3640 (STR #2919, bug #464721).

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.

The previous CUPS security advisor, stated that it fixed CVE-2008-3640 for Scientific Linux 3, 4, and 5. It was discovered this flaw was not properly fixed on Scientific Linux 3, however. (CVE-2009-0577)

These new packages contain a proper fix for CVE-2008-3640 on Scientific Linux 3. Scientific Linux 4 and 5 already contain the appropriate fix for this flaw and do not need to be updated.

A buffer overflow flaw was discovered in the SGI image format decoding routines used by the CUPS image converting filter 'imagetops'. An attacker could create a malicious SGI image file that could, possibly, execute arbitrary code as the 'lp' user if the file was printed.
(CVE-2008-3639)

An integer overflow flaw leading to a heap buffer overflow was discovered in the Text-to-PostScript 'texttops' filter. An attacker could create a malicious text file that could, possibly, execute arbitrary code as the 'lp' user if the file was printed.
(CVE-2008-3640)

An insufficient buffer bounds checking flaw was discovered in the HP-GL/2-to-PostScript 'hpgltops' filter. An attacker could create a malicious HP-GL/2 file that could, possibly, execute arbitrary code as the 'lp' user if the file was printed. (CVE-2008-3641)

Specially crafted print jobs could trigger buffer overflows in the 'imagetops', 'texttops' and 'hpgltops' filters. Attackers could potentially exploit that to execute arbitrary code on the cups server.
(CVE-2008-3639, CVE-2008-3640, CVE-2008-3641)

Specially crafted print jobs could trigger buffer overflows in the 'imagetops', 'texttops' and 'hpgltops' filters. Attackers could potentially exploit that to execute arbitrary code on the cups server (CVE-2008-3639, CVE-2008-3640, CVE-2008-3641).

It was discovered that the SGI image filter in CUPS did not perform proper bounds checking. If a user or automated system were tricked into opening a crafted SGI image, an attacker could cause a denial of service. (CVE-2008-3639)

It was discovered that the texttops filter in CUPS did not properly validate page metrics. If a user or automated system were tricked into opening a crafted text file, an attacker could cause a denial of service. (CVE-2008-3640)

It was discovered that the HP-GL filter in CUPS did not properly check for invalid pen parameters. If a user or automated system were tricked into opening a crafted HP-GL or HP-GL/2 file, a remote attacker could cause a denial of service or execute arbitrary code with user privileges. In Ubuntu 7.10 and 8.04 LTS, attackers would be isolated by the AppArmor CUPS profile. (CVE-2008-3641)

NOTE: The previous update for CUPS on Ubuntu 6.06 LTS did not have the the fix for CVE-2008-1722 applied. This update includes fixes for the problem. We apologize for the inconvenience.

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

A buffer overflow in the SGI image format decoding routines used by the CUPS image converting filter imagetops was discovered. An attacker could create malicious SGI image files that could possibly execute arbitrary code if the file was printed (CVE-2008-3639).

An integer overflow flaw leading to a heap buffer overflow was found in the Text-to-PostScript texttops filter. An attacker could create a malicious text file that could possibly execute arbitrary code if the file was printed (CVE-2008-3640).

Finally, an insufficient buffer bounds checking flaw was found in the HP-GL/2-to-PostScript hpgltops filter. An attacker could create a malicious HP-GL/2 file that could possibly execute arbitrary code if the file was printed (CVE-2008-3641).

The updated packages have been patched to prevent this issue; for Mandriva Linux 2009.0 the latest CUPS version (1.3.9) is provided that corrects these issues and also provides other bug fixes.

Updated cups packages that fix a security issue are now available for Red Hat Enterprise Linux 3.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The Common UNIX(r) Printing System (CUPS) provides a portable printing layer for UNIX operating systems.

The CUPS security advisory, RHSA-2008:0937, stated that it fixed CVE-2008-3640 for Red Hat Enterprise Linux 3, 4, and 5. It was discovered this flaw was not properly fixed on Red Hat Enterprise Linux 3, however. (CVE-2009-0577)

These new packages contain a proper fix for CVE-2008-3640 on Red Hat Enterprise Linux 3. Red Hat Enterprise Linux 4 and 5 already contain the appropriate fix for this flaw and do not need to be updated.

Users of cups should upgrade to these updated packages, which contain a backported patch to correct this issue.

The remote host is affected by the vulnerability described in GLSA-200812-11 (CUPS: Multiple vulnerabilities)

    Several buffer overflows were found in:
    The read_rle16 function in imagetops (CVE-2008-3639, found by     regenrecht, reported via ZDI)     The WriteProlog function in texttops (CVE-2008-3640, found by     regenrecht, reported via ZDI)     The Hewlett-Packard Graphics Language (HPGL) filter (CVE-2008-3641,     found by regenrecht, reported via iDefense)     The _cupsImageReadPNG function (CVE-2008-5286, reported by iljavs)   Impact :

    A remote attacker could send specially crafted input to a vulnerable     server, resulting in the remote execution of arbitrary code with the     privileges of the user running the server.
  Workaround :

    None this time.

New cups packages are available for Slackware 12.0, 12.1, and
-current to fix security issues.

Several local vulnerabilities have been discovered in the Common UNIX Printing System. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2008-3639     It was discovered that insufficient bounds checking in     the SGI image filter may lead to the execution of     arbitrary code.

  - CVE-2008-3640     It was discovered that an integer overflow in the     Postscript conversion tool 'texttops' may lead to the     execution of arbitrary code.

  - CVE-2008-3641     It was discovered that insufficient bounds checking in     the HPGL filter may lead to the execution of arbitrary     code.

Security release. This updates to 1.3.9 and fixes three integer overflows in the CUPS text and image filters.

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

According to its banner, the version of CUPS installed on the remote host is earlier than 1.3.9.  Such versions are affected by several issues :

  - The HP-GL/2 filter does not adequately check the ranges on the pen width and pen color opcodes, which allows an attacker to overwrite memory addresses with arbitrary data and which may result in execution of arbitrary code (STR #2911).
  - There is a heap-based buffer overflow in the SGI file format parsing module that can be triggered with malformed Run Length Encoded (RLE) data to execute arbitrary code (STR #2918).
  - There is an integer overflow vulnerability in the 'WriteProlog()' function in the 'texttops' application that can be triggered when calculating the page size used for storing PostScript data to execute arbitrary code (STR #2919).

The release note of cups 1.3.9 reports :

It contains the following fixes :

- SECURITY: The HP-GL/2 filter did not range check pen numbers (STR #2911)

- SECURITY: The SGI image file reader did not range check 16-bit run lengths (STR #2918)

- SECURITY: The text filter did not range check cpi, lpi, or column values (STR #2919)

Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the affected service.

According to its banner, the version of CUPS installed on the remote host is earlier than 1.3.9. Such versions are affected by several issues :

  - The HP-GL/2 filter does not adequately check the ranges     on the pen width and pen color opcodes that allows an     attacker to overwrite memory addresses with arbitrary     data, which may result in execution of arbitrary code     (STR #2911).

  - There is a heap-based buffer overflow in the SGI file     format parsing module that can be triggered with     malformed Run Length Encoded (RLE) data to execute     arbitrary code (STR #2918).

  - There is an integer overflow vulnerability in the     'WriteProlog()' function in the 'texttops'     application that can be triggered when calculating     the page size used for storing PostScript data to     execute arbitrary code (STR #2919).

Updated cups packages that fix multiple security issues are now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The Common UNIX Printing System (CUPS) provides a portable printing layer for UNIX(R) operating systems.

A buffer overflow flaw was discovered in the SGI image format decoding routines used by the CUPS image converting filter 'imagetops'. An attacker could create a malicious SGI image file that could, possibly, execute arbitrary code as the 'lp' user if the file was printed.
(CVE-2008-3639)

An integer overflow flaw leading to a heap buffer overflow was discovered in the Text-to-PostScript 'texttops' filter. An attacker could create a malicious text file that could, possibly, execute arbitrary code as the 'lp' user if the file was printed.
(CVE-2008-3640)

An insufficient buffer bounds checking flaw was discovered in the HP-GL/2-to-PostScript 'hpgltops' filter. An attacker could create a malicious HP-GL/2 file that could, possibly, execute arbitrary code as the 'lp' user if the file was printed. (CVE-2008-3641)

Red Hat would like to thank regenrecht for reporting these issues.

All CUPS users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

Specially crafted print jobs could trigger buffer overflows in the 'imagetops', 'texttops' and 'hpgltops' filters. Attackers could potentially exploit that to execute arbitrary code on the cups server.
(CVE-2008-3639 / CVE-2008-3640 / CVE-2008-3641)

ID	Name	Product	Family	Severity
67808	Oracle Linux 3 : cups (ELSA-2009-0308)	Nessus	Oracle Linux Local Security Checks	medium
67755	Oracle Linux 5 : cups (ELSA-2008-0937)	Nessus	Oracle Linux Local Security Checks	critical
60536	Scientific Linux Security Update : cups on SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
60483	Scientific Linux Security Update : cups on SL3.x, SL4.x, SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	critical
41247	SuSE9 Security Update : CUPS (YOU Patch Number 12261)	Nessus	SuSE Local Security Checks	critical
39941	openSUSE Security Update : cups (cups-232)	Nessus	SuSE Local Security Checks	critical
37836	Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : cupsys vulnerabilities (USN-656-1)	Nessus	Ubuntu Local Security Checks	critical
36840	Mandriva Linux Security Advisory : cups (MDVSA-2008:211)	Nessus	Mandriva Local Security Checks	critical
35722	RHEL 3 : cups (RHSA-2009:0308)	Nessus	Red Hat Local Security Checks	medium
35719	CentOS 3 / 4 : cups (CESA-2009:0308)	Nessus	CentOS Local Security Checks	medium
35086	GLSA-200812-11 : CUPS: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
34719	Slackware 12.0 / 12.1 / current : cups (SSA:2008-312-01)	Nessus	Slackware Local Security Checks	critical
34449	Debian DSA-1656-1 : cupsys - several vulnerabilities	Nessus	Debian Local Security Checks	critical
34425	Fedora 9 : cups-1.3.9-1.fc9 (2008-8844)	Nessus	Fedora Local Security Checks	critical
34424	Fedora 8 : cups-1.3.9-1.fc8 (2008-8801)	Nessus	Fedora Local Security Checks	critical
4707	CUPS < 1.3.9 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	high
34391	FreeBSD : cups -- multiple vulnerabilities (ce29ce1d-971a-11dd-ab7e-001c2514716c)	Nessus	FreeBSD Local Security Checks	critical
34385	CUPS < 1.3.9 Multiple Vulnerabilities	Nessus	Misc.	high
34384	RHEL 3 / 4 / 5 : cups (RHSA-2008:0937)	Nessus	Red Hat Local Security Checks	critical
34375	CentOS 3 / 4 / 5 : cups (CESA-2008:0937)	Nessus	CentOS Local Security Checks	critical
34359	SuSE 10 Security Update : CUPS (ZYPP Patch Number 5653)	Nessus	SuSE Local Security Checks	critical
34358	openSUSE 10 Security Update : cups (cups-5652)	Nessus	SuSE Local Security Checks	critical

Detections

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CVE-2008-3640

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