Netwide Assembler (NASM) 2.13.02rc2 has a heap-based buffer over-read in the function tokenize in asm/preproc.c, related to an unterminated string.

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.

  - nasm: use-after-free in paste_tokens in asm/preproc.c (CVE-2019-8343)

  - In Netwide Assembler (NASM) 2.14rc0, preproc.c allows remote attackers to cause a denial of service (heap-     based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.
    (CVE-2017-11111)

  - In Netwide Assembler (NASM) 2.14rc0, there is an illegal address access in the function paste_tokens() in     preproc.c, aka a NULL pointer dereference. It will lead to remote denial of service. (CVE-2017-14228)

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 7 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.

  - nasm: use-after-free in paste_tokens in asm/preproc.c (CVE-2019-8343)

  - In Netwide Assembler (NASM) 2.14rc0, there are multiple heap use after free vulnerabilities in the tool     nasm. The related heap is allocated in the token() function and freed in the detoken() function (called by     pp_getline()) - it is used again at multiple positions later that could cause multiple damages. For     example, it causes a corrupted double-linked list in detoken(), a double free or corruption in     delete_Token(), and an out-of-bounds write in detoken(). It has a high possibility to lead to a remote     code execution attack. (CVE-2017-10686)

  - In Netwide Assembler (NASM) 2.14rc0, preproc.c allows remote attackers to cause a denial of service (heap-     based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.
    (CVE-2017-11111)

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

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

  - In Netwide Assembler (NASM) 2.14rc0, there are multiple     heap use after free vulnerabilities in the tool nasm.
    The related heap is allocated in the token() function     and freed in the detoken() function (called by     pp_getline()) - it is used again at multiple positions     later that could cause multiple damages. For example,     it causes a corrupted double-linked list in detoken(),     a double free or corruption in delete_Token(), and an     out-of-bounds write in detoken(). It has a high     possibility to lead to a remote code execution     attack.(CVE-2017-10686)

  - In Netwide Assembler (NASM) 2.14rc0, preproc.c allows     remote attackers to cause a denial of service     (heap-based buffer overflow and application crash) or     possibly have unspecified other impact via a crafted     file.(CVE-2017-11111)

  - In Netwide Assembler (NASM) 2.14rc0, there is a 'SEGV     on unknown address' that will cause a remote denial of     service attack, because asm/preproc.c mishandles macro     calls that have the wrong number of     arguments.(CVE-2017-17810)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     heap-based buffer over-read in the function detoken()     in asm/preproc.c that will cause a remote denial of     service attack.(CVE-2017-17812)

  - In Netwide Assembler (NASM) 2.14rc0, there is an     illegal address access in is_mmacro() in asm/preproc.c     that will cause a remote denial of service attack,     because of a missing check for the relationship between     minimum and maximum parameter counts.(CVE-2017-17815)

  - In Netwide Assembler (NASM) 2.14rc0, there is an     illegal address access in the function find_cc() in     asm/preproc.c that will cause a remote denial of     service attack, because pointers associated with     skip_white_ calls are not validated.(CVE-2017-17819)

  - Netwide Assembler (NASM) 2.13.02rc2 has a heap-based     buffer over-read in the function tokenize in     asm/preproc.c, related to an unterminated     string.(CVE-2018-8881)

  - Netwide Assembler (NASM) 2.13.02rc2 has a stack-based     buffer under-read in the function ieee_shr in     asm/float.c via a large shift value.(CVE-2018-8882)

  - Netwide Assembler (NASM) 2.14rc0 has a division-by-zero     vulnerability in the expr5 function in asm/eval.c via a     malformed input file.(CVE-2018-10016)

  - Netwide Assembler (NASM) 2.14rc0 has an endless while     loop in the assemble_file function of asm/nasm.c     because of a globallineno integer     overflow.(CVE-2018-10316)

  - Netwide Assembler (NASM) 2.14rc15 has a heap-based     buffer over-read in expand_mmac_params in asm/preproc.c     for insufficient input.(CVE-2018-19214)

  - Netwide Assembler (NASM) 2.14rc16 has a heap-based     buffer over-read in expand_mmac_params in asm/preproc.c     for the special cases of the % and $ and !     characters.(CVE-2018-19215)

  - There is an illegal address access at asm/preproc.c     (function: is_mmacro) in Netwide Assembler (NASM)     2.14rc16 that will cause a denial of service     (out-of-bounds array access) because a certain     conversion can result in a negative     integer.(CVE-2018-19755)

  - NASM nasm-2.13.03 nasm- 2.14rc15 version 2.14rc15 and     earlier contains a memory corruption (crashed) of nasm     when handling a crafted file due to function     assemble_file(inname, depend_ptr) at asm/nasm.c:482.
    vulnerability in function assemble_file(inname,     depend_ptr) at asm/nasm.c:482. that can result in     aborting/crash nasm program. This attack appear to be     exploitable via a specially crafted asm     file..(CVE-2018-1000667)

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 nasm package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Netwide Assembler (NASM) 2.14rc15 has a heap-based     buffer over-read in expand_mmac_params in asm/preproc.c     for insufficient input.(CVE-2018-19214)

  - Netwide Assembler (NASM) 2.14rc16 has a heap-based     buffer over-read in expand_mmac_params in asm/preproc.c     for the special cases of the % and $ and !     characters.(CVE-2018-19215)

  - Netwide Assembler (NASM) 2.13.02rc2 has a heap-based     buffer over-read in the function tokenize in     asm/preproc.c, related to an unterminated     string.(CVE-2018-8881)

  - Netwide Assembler (NASM) 2.13.02rc2 has a stack-based     buffer under-read in the function ieee_shr in     asm/float.c via a large shift value.(CVE-2018-8882)

  - In Netwide Assembler (NASM) 2.14rc0, there are multiple     heap use after free vulnerabilities in the tool nasm.
    The related heap is allocated in the token() function     and freed in the detoken() function (called by     pp_getline()) - it is used again at multiple positions     later that could cause multiple damages. For example,     it causes a corrupted double-linked list in detoken(),     a double free or corruption in delete_Token(), and an     out-of-bounds write in detoken(). It has a high     possibility to lead to a remote code execution     attack.(CVE-2017-10686)

  - In Netwide Assembler (NASM) 2.14rc0, preproc.c allows     remote attackers to cause a denial of service     (heap-based buffer overflow and application crash) or     possibly have unspecified other impact via a crafted     file.(CVE-2017-11111)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     heap-based buffer over-read that will cause a remote     denial of service attack, related to a while loop in     paste_tokens in asm/preproc.c.(CVE-2017-17818)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     heap-based buffer overflow that will cause a remote     denial of service attack, related to a strcpy in     paste_tokens in asm/preproc.c, a similar issue to     CVE-2017-11111.(CVE-2017-17811)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     use-after-free in the pp_list_one_macro function in     asm/preproc.c that will cause a remote denial of     service attack, related to mishandling of line-syntax     errors.(CVE-2017-17813)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     use-after-free in do_directive in asm/preproc.c that     will cause a remote denial of service     attack.(CVE-2017-17814)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     use-after-free in pp_getline in asm/preproc.c that will     cause a remote denial of service     attack.(CVE-2017-17816)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     use-after-free in pp_verror in asm/preproc.c that will     cause a remote denial of service     attack.(CVE-2017-17817)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     heap-based buffer over-read that will cause a remote     denial of service attack, related to a while loop in     paste_tokens in asm/preproc.c.(CVE-2017-17818)

  - In Netwide Assembler (NASM) 2.14rc0, there is a     use-after-free in pp_list_one_macro in asm/preproc.c     that will lead to a remote denial of service attack,     related to mishandling of operand-type     errors.(CVE-2017-17820)

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 nasm package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - NASM nasm-2.13.03 nasm- 2.14rc15 version 2.14rc15 and     earlier contains a memory corruption (crashed) of nasm     when handling a crafted file due to function     assemble_file(inname, depend_ptr) at asm/nasm.c:482.
    vulnerability in function assemble_file(inname,     depend_ptr) at asm/nasm.c:482. that can result in     aborting/crash nasm program. This attack appear to be     exploitable via a specially crafted asm     file..(CVE-2018-1000667)

  - Netwide Assembler (NASM) 2.14rc0 has a division-by-zero     vulnerability in the expr5 function in asm/eval.c via a     malformed input file.(CVE-2018-10016)

  - Netwide Assembler (NASM) 2.14rc0 has an endless while     loop in the assemble_file function of asm/nasm.c     because of a globallineno integer     overflow.(CVE-2018-10316)

  - Netwide Assembler (NASM) 2.14rc15 has a heap-based     buffer over-read in expand_mmac_params in asm/preproc.c     for insufficient input.(CVE-2018-19214)

  - Netwide Assembler (NASM) 2.14rc16 has a heap-based     buffer over-read in expand_mmac_params in asm/preproc.c     for the special cases of the % and $ and !     characters.(CVE-2018-19215)

  - There is an illegal address access at asm/preproc.c     (function: is_mmacro) in Netwide Assembler (NASM)     2.14rc16 that will cause a denial of service     (out-of-bounds array access) because a certain     conversion can result in a negative     integer.(CVE-2018-19755)

  - Netwide Assembler (NASM) 2.13.02rc2 has a heap-based     buffer over-read in the function tokenize in     asm/preproc.c, related to an unterminated     string.(CVE-2018-8881)

  - Netwide Assembler (NASM) 2.13.02rc2 has a stack-based     buffer under-read in the function ieee_shr in     asm/float.c via a large shift value.(CVE-2018-8882)

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.

This update for nasm fixes the following issues :

nasm was updated to version 2.14.02.

This allows building of Mozilla Firefox 78ESR and also contains lots of bugfixes, security fixes and improvements.

  - Fix crash due to multiple errors or warnings during the     code generation pass if a list file is specified.

  - Create all system-defined macros defore processing     command-line given preprocessing directives (-p, -d, -u,
    --pragma, --before).

  - If debugging is enabled, define a __DEBUG_FORMAT__     predefined macro. See section 4.11.7.

  - Fix an assert for the case in the obj format when a SEG     operator refers to an EXTERN symbol declared further     down in the code.

  - Fix a corner case in the floating-point code where a     binary, octal or hexadecimal floating-point having at     least 32, 11, or 8 mantissa digits could produce     slightly incorrect results under very specific     conditions.

  - Support -MD without a filename, for gcc compatibility.
    -MF can be used to set the dependencies output filename.
    See section 2.1.7.

  - Fix -E in combination with -MD. See section 2.1.21.

  - Fix missing errors on redefined labels; would cause     convergence failure instead which is very slow and not     easy to debug.

  - Duplicate definitions of the same label with the same     value is now explicitly permitted (2.14 would allow it     in some circumstances.)

  - Add the option --no-line to ignore %line directives in     the source. See section 2.1.33 and section 4.10.1.

  - Changed -I option semantics by adding a trailing path     separator unconditionally.

  - Fixed null dereference in corrupted invalid single line     macros.

  - Fixed division by zero which may happen if source code     is malformed.

  - Fixed out of bound access in processing of malformed     segment override.

  - Fixed out of bound access in certain EQU parsing.

  - Fixed buffer underflow in float parsing.

  - Added SGX (Intel Software Guard Extensions)     instructions.

  - Added +n syntax for multiple contiguous registers.

  - Fixed subsections_via_symbols for macho object format.

  - Added the --gprefix, --gpostfix, --lprefix, and
    --lpostfix command line options, to allow command line     base symbol renaming. See section 2.1.28.

  - Allow label renaming to be specified by %pragma in     addition to from the command line. See section 6.9.

  - Supported generic %pragma namespaces, output and debug.
    See section 6.10.

  - Added the --pragma command line option to inject a     %pragma directive. See section 2.1.29.

  - Added the --before command line option to accept     preprocess statement before input. See section 2.1.30.

  - Added AVX512 VBMI2 (Additional Bit Manipulation), VNNI     (Vector Neural Network), BITALG (Bit Algorithm), and     GFNI (Galois Field New Instruction) instructions.

  - Added the STATIC directive for local symbols that should     be renamed using global-symbol rules. See section 6.8.

  - Allow a symbol to be defined as EXTERN and then later     overridden as GLOBAL or COMMON. Furthermore, a symbol     declared EXTERN and then defined will be treated as     GLOBAL. See section 6.5.

  - The GLOBAL directive no longer is required to precede     the definition of the symbol.

  - Support private_extern as macho specific extension to     the GLOBAL directive. See section 7.8.5.

  - Updated UD0 encoding to match with the specification

  - Added the --limit-X command line option to set execution     limits. See section 2.1.31.

  - Updated the Codeview version number to be aligned with     MASM.

  - Added the --keep-all command line option to preserve     output files. See section 2.1.32.

  - Added the --include command line option, an alias to -P     (section 2.1.18).

  - Added the --help command line option as an alias to -h     (section 3.1).

  - Added -W, -D, and -Q suffix aliases for RET instructions     so the operand sizes of these instructions can be     encoded without using o16, o32 or o64.

New upstream version 2.13.03 :

  - Add flags: AES, VAES, VPCLMULQDQ

  - Add VPCLMULQDQ instruction

  - elf: Add missing dwarf loc section

  - documentation updates This update was imported from the     SUSE:SLE-15:Update update project.

This update for nasm fixes the following issues :

nasm was updated to version 2.14.02.

This allows building of Mozilla Firefox 78ESR and also contains lots of bugfixes, security fixes and improvements.

Fix crash due to multiple errors or warnings during the code generation pass if a list file is specified.

Create all system-defined macros defore processing command-line given preprocessing directives (-p, -d, -u, --pragma, --before).

If debugging is enabled, define a __DEBUG_FORMAT__ predefined macro.
See section 4.11.7.

Fix an assert for the case in the obj format when a SEG operator refers to an EXTERN symbol declared further down in the code.

Fix a corner case in the floating-point code where a binary, octal or hexadecimal floating-point having at least 32, 11, or 8 mantissa digits could produce slightly incorrect results under very specific conditions.

Support -MD without a filename, for gcc compatibility. -MF can be used to set the dependencies output filename. See section 2.1.7.

Fix -E in combination with -MD. See section 2.1.21.

Fix missing errors on redefined labels; would cause convergence failure instead which is very slow and not easy to debug.

Duplicate definitions of the same label with the same value is now explicitly permitted (2.14 would allow it in some circumstances.)

Add the option --no-line to ignore %line directives in the source. See section 2.1.33 and section 4.10.1.

Changed -I option semantics by adding a trailing path separator unconditionally.

Fixed null dereference in corrupted invalid single line macros.

Fixed division by zero which may happen if source code is malformed.

Fixed out of bound access in processing of malformed segment override.

Fixed out of bound access in certain EQU parsing.

Fixed buffer underflow in float parsing.

Added SGX (Intel Software Guard Extensions) instructions.

Added +n syntax for multiple contiguous registers.

Fixed subsections_via_symbols for macho object format.

Added the --gprefix, --gpostfix, --lprefix, and --lpostfix command line options, to allow command line base symbol renaming. See section 2.1.28.

Allow label renaming to be specified by %pragma in addition to from the command line. See section 6.9.

Supported generic %pragma namespaces, output and debug. See section 6.10.

Added the --pragma command line option to inject a %pragma directive.
See section 2.1.29.

Added the --before command line option to accept preprocess statement before input. See section 2.1.30.

Added AVX512 VBMI2 (Additional Bit Manipulation), VNNI (Vector Neural Network), BITALG (Bit Algorithm), and GFNI (Galois Field New Instruction) instructions.

Added the STATIC directive for local symbols that should be renamed using global-symbol rules. See section 6.8.

Allow a symbol to be defined as EXTERN and then later overridden as GLOBAL or COMMON. Furthermore, a symbol declared EXTERN and then defined will be treated as GLOBAL. See section 6.5.

The GLOBAL directive no longer is required to precede the definition of the symbol.

Support private_extern as macho specific extension to the GLOBAL directive. See section 7.8.5.

Updated UD0 encoding to match with the specification

Added the --limit-X command line option to set execution limits. See section 2.1.31.

Updated the Codeview version number to be aligned with MASM.

Added the --keep-all command line option to preserve output files. See section 2.1.32.

Added the --include command line option, an alias to -P (section 2.1.18).

Added the --help command line option as an alias to -h (section 3.1).

Added -W, -D, and -Q suffix aliases for RET instructions so the operand sizes of these instructions can be encoded without using o16, o32 or o64.

New upstream version 2.13.03 :

Add flags: AES, VAES, VPCLMULQDQ

Add VPCLMULQDQ instruction

elf: Add missing dwarf loc section

documentation updates

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

It was discovered that NASM incorrectly handled certain source files.
If a user or automated system were tricked into processing a specially crafted source file, a remote attacker could use these issues to cause NASM to crash, resulting in a denial of service, or possibly execute arbitrary code.

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.

ID	Name	Product	Family	Severity
199078	RHEL 6 : nasm (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
199071	RHEL 7 : nasm (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
146733	EulerOS 2.0 SP2 : nasm (EulerOS-SA-2021-1332)	Nessus	Huawei Local Security Checks	high
145157	EulerOS 2.0 SP3 : nasm (EulerOS-SA-2021-1100)	Nessus	Huawei Local Security Checks	high
144219	EulerOS 2.0 SP5 : nasm (EulerOS-SA-2020-2556)	Nessus	Huawei Local Security Checks	high
138735	openSUSE Security Update : nasm (openSUSE-2020-954)	Nessus	SuSE Local Security Checks	high
138733	openSUSE Security Update : nasm (openSUSE-2020-952)	Nessus	SuSE Local Security Checks	high
138316	SUSE SLED15 / SLES15 Security Update : nasm (SUSE-SU-2020:1843-1)	Nessus	SuSE Local Security Checks	high
110805	Ubuntu 14.04 LTS : NASM vulnerabilities (USN-3694-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2018-8881

high

Tenable Plugins

high

high

high

high

high

high

high

high

high