In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has glibc packages installed that are affected by multiple vulnerabilities:

  - The posix_spawn_file_actions_addopen function in glibc before 2.20 does not copy its path argument in     accordance with the POSIX specification, which allows context-dependent attackers to trigger use-after-     free vulnerabilities. (CVE-2014-4043)

  - In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep. (CVE-2018-20796)

Note that Nessus has not tested for these issues 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 glibc packages installed that are affected by multiple vulnerabilities:

  - The posix_spawn_file_actions_addopen function in glibc before 2.20 does not copy its path argument in     accordance with the POSIX specification, which allows context-dependent attackers to trigger use-after-     free vulnerabilities. (CVE-2014-4043)

  - In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep. (CVE-2018-20796)

  - On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the     LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition,     allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass     ASLR for a setuid program. (CVE-2019-19126)

  - The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when processing invalid multi-     byte input sequences in the EUC-KR encoding, may have a buffer over-read. (CVE-2019-25013)

  - The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range     reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when     passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to     sysdeps/ieee754/ldbl-96/e_rem_pio2l.c. (CVE-2020-10029)

  - sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-     based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with     a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to     sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because     of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words,     the reference to 2.23 is intentional despite the mention of Fixed for glibc 2.33 in the 26649 reference.
    (CVE-2020-29573)

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 glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The glibc package contains standard libraries which are     used by multiple programs on the system. In order to     save disk space and memory, as well as to make     upgrading easier, common system code is kept in one     place and shared between programs. This particular     package contains the most important sets of shared     libraries: the standard C library and the standard math     library. Without these two libraries, a Linux system     will not function.Security Fix(es):Stack-based buffer     overflow in the getaddrinfo function in     sysdeps/posix/getaddrinfo.c in the GNU C Library (aka     glibc or libc6) allows remote attackers to cause a     denial of service (crash) via vectors involving hostent     conversion. NOTE: this vulnerability exists because of     an incomplete fix for CVE-2013-4458.(CVE-2016-3706)In     the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(|)(\\1\\1)*' in grep, a different issue than     CVE-2018-20796. NOTE: the software maintainer disputes     that this is a vulnerability because the behavior     occurs only with a crafted pattern.(CVE-2019-9192)In     the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(\227|)(\\1\\1|t1|\\\2537)+' in     grep.(CVE-2018-20796)GNU Libc current is affected by:
    Re-mapping current loaded library with malicious ELF     file. The impact is: In worst case attacker may     evaluate privileges. The component is: libld. The     attack vector is: Attacker sends 2 ELF files to victim     and asks to run ldd on it. ldd execute     code.(CVE-2019-1010023)A use-after-free vulnerability     introduced in glibc upstream version 2.14 was found in     the way the tilde expansion was carried out. Directory     paths containing an initial tilde followed by a valid     username were affected by this issue. A local attacker     could exploit this flaw by creating a specially crafted     path that, when processed by the glob function, would     potentially lead to arbitrary code execution. This was     fixed in version 2.32.(CVE-2020-1752)The GNU C Library     (aka glibc or libc6) before 2.32 could overflow an     on-stack buffer during range reduction if an input to     an 80-bit long double function contains a non-canonical     bit pattern, a seen when passing a     0x5d414141414141410000 value to sinl on x86 targets.
    This is related to     sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.(CVE-2020-10029)

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 glibc packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The glibc package contains standard libraries which are     used by multiple programs on the system. In order to     save disk space and memory, as well as to make     upgrading easier, common system code is kept in one     place and shared between programs. This particular     package contains the most important sets of shared     libraries: the standard C library and the standard math     library. Without these two libraries, a Linux system     will not function.Security Fix(es):The string component     in the GNU C Library (aka glibc or libc6) through 2.28,     when running on the x32 architecture, incorrectly     attempts to use a 64-bit register for size_t in     assembly codes, which can lead to a segmentation fault     or possibly unspecified other impact, as demonstrated     by a crash in __memmove_avx_unaligned_erms in     sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S     during a memcpy.(CVE-2019-6488)** DISPUTED ** In the     GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(|)(\\1\\1)*' in grep, a different issue than     CVE-2018-20796. NOTE: the software maintainer disputes     that this is a vulnerability because the behavior     occurs only with a crafted pattern.(CVE-2019-9192)In     the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(\227|)(\\1\\1|t1|\\\2537)+' in     grep.(CVE-2018-20796)The GNU C Library (aka glibc or     libc6) before 2.32 could overflow an on-stack buffer     during range reduction if an input to an 80-bit long     double function contains a non-canonical bit pattern, a     seen when passing a 0x5d414141414141410000 value to     sinl on x86 targets. This is related to     sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.(CVE-2020-10029)

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 glibc packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In the GNU C Library (aka glibc or libc6) through 2.28,     the getaddrinfo function would successfully parse a     string that contained an IPv4 address followed by     whitespace and arbitrary characters, which could lead     applications to incorrectly assume that it had parsed a     valid string, without the possibility of embedded HTTP     headers or other potentially dangerous     substrings.(CVE-2016-10739)

  - Stack-based buffer overflow in the glob implementation     in GNU C Library (aka glibc) before 2.24, when     GLOB_ALTDIRFUNC is used, allows context-dependent     attackers to cause a denial of service (crash) via a     long name.(CVE-2016-1234)

  - Use-after-free vulnerability in the clntudp_call     function in sunrpc/clnt_udp.c in the GNU C Library (aka     glibc or libc6) before 2.26 allows remote attackers to     have unspecified impact via vectors related to error     path.(CVE-2017-12133)

  - In the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(\227|)(\\1\\1|t1|\\\2537)+' in grep.(CVE-2018-20796)

  - ** DISPUTED ** In the GNU C Library (aka glibc or     libc6) through 2.29, check_dst_limits_calc_pos_1 in     posix/regexec.c has Uncontrolled Recursion, as     demonstrated by '(|)(\\1\\1)*' in grep, a different     issue than CVE-2018-20796. NOTE: the software     maintainer disputes that this is a vulnerability     because the behavior occurs only with a crafted     pattern.(CVE-2019-9192)

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 glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(\227|)(\\1\\1|t1|\\\2537)+' in grep.(CVE-2018-20796)

  - In the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(|)(\\1\\1)*' in grep, a different issue than     CVE-2018-20796. NOTE: the software maintainer disputes     that this is a vulnerability because the behavior     occurs only with a crafted pattern.(CVE-2019-9192)

  - On the x86-64 architecture, the GNU C Library (aka     glibc) before 2.31 fails to ignore the     LD_PREFER_MAP_32BIT_EXEC environment variable during     program execution after a security transition, allowing     local attackers to restrict the possible mapping     addresses for loaded libraries and thus bypass ASLR for     a setuid program.(CVE-2019-19126)

  - In the GNU C Library (aka glibc or libc6) through 2.28,     the getaddrinfo function would successfully parse a     string that contained an IPv4 address followed by     whitespace and arbitrary characters, which could lead     applications to incorrectly assume that it had parsed a     valid string, without the possibility of embedded HTTP     headers or other potentially dangerous     substrings.(CVE-2016-10739)

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 glibc packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - ** DISPUTED ** In the GNU C Library (aka glibc or     libc6) through 2.29, check_dst_limits_calc_pos_1 in     posix/regexec.c has Uncontrolled Recursion, as     demonstrated by '(|)(\\1\\1)*' in grep, a different     issue than CVE-2018-20796. NOTE: the software     maintainer disputes that this is a vulnerability     because the behavior occurs only with a crafted     pattern.(CVE-2019-9192)

  - In the GNU C Library (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(\227|)(\\1\\1|t1|\\\2537)+' in grep.(CVE-2018-20796)

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 glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The glibc package contains standard libraries which are     used by multiple programs on the system. In order to     save disk space and memory, as well as to make     upgrading easier, common system code is kept in one     place and shared between programs. This particular     package contains the most important sets of shared     libraries: the standard C library and the standard math     library. Without these two libraries, a Linux system     will not function.Security Fix(es):GNU Libc current is     affected by: Re-mapping current loaded library with     malicious ELF file. The impact is: In worst case     attacker may evaluate privileges. The component is:
    libld. The attack vector is: Attacker sends 2 ELF files     to victim and asks to run ldd on it. ldd execute     code.(CVE-2019-1010023)In the GNU C Library (aka glibc     or libc6) through 2.29, check_dst_limits_calc_pos_1 in     posix/regexec.c has Uncontrolled Recursion, as     demonstrated by '(|)(\\1\\1)*' in grep, a different     issue than CVE-2018-20796. NOTE: the software     maintainer disputes that this is a vulnerability     because the behavior occurs only with a crafted     pattern.(CVE-2019-9192)In the GNU C Library (aka glibc     or libc6) through 2.29, check_dst_limits_calc_pos_1 in     posix/regexec.c has Uncontrolled Recursion, as     demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in     grep.(CVE-2018-20796)

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 glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The glibc package contains standard libraries which are     used by multiple programs on the system. In order to     save disk space and memory, as well as to make     upgrading easier, common system code is kept in one     place and shared between programs. This particular     package contains the most important sets of shared     libraries: the standard C library and the standard math     library. Without these two libraries, a Linux system     will not function.Security Fix(es):In the GNU C Library     (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(|)(\\1\\1)*' in grep, a different issue than     CVE-2018-20796. NOTE: the software maintainer disputes     that this is a vulnerability because the behavior     occurs only with a crafted pattern.(CVE-2019-9192)GNU     Libc current is affected by: Re-mapping current loaded     library with malicious ELF file. The impact is: In     worst case attacker may evaluate privileges. The     component is: libld. The attack vector is: Attacker     sends 2 ELF files to victim and asks to run ldd on it.
    ldd execute code.(CVE-2019-1010023)In the GNU C Library     (aka glibc or libc6) through 2.29,     check_dst_limits_calc_pos_1 in posix/regexec.c has     Uncontrolled Recursion, as demonstrated by     '(\227|)(\\1\\1|t1|\\\2537)+' in grep.(CVE-2018-20796)

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.

ID	Name	Product	Family	Severity
160802	NewStart CGSL CORE 5.05 / MAIN 5.05 : glibc Multiple Vulnerabilities (NS-SA-2022-0031)	Nessus	NewStart CGSL Local Security Checks	high
154607	NewStart CGSL CORE 5.04 / MAIN 5.04 : glibc Multiple Vulnerabilities (NS-SA-2021-0095)	Nessus	NewStart CGSL Local Security Checks	low
137509	EulerOS 2.0 SP2 : glibc (EulerOS-SA-2020-1667)	Nessus	Huawei Local Security Checks	high
136217	EulerOS Virtualization for ARM 64 3.0.2.0 : glibc (EulerOS-SA-2020-1514)	Nessus	Huawei Local Security Checks	high
135640	EulerOS Virtualization 3.0.2.2 : glibc (EulerOS-SA-2020-1478)	Nessus	Huawei Local Security Checks	medium
135517	EulerOS 2.0 SP3 : glibc (EulerOS-SA-2020-1388)	Nessus	Huawei Local Security Checks	medium
135117	EulerOS Virtualization for ARM 64 3.0.6.0 : glibc (EulerOS-SA-2020-1330)	Nessus	Huawei Local Security Checks	high
133986	EulerOS 2.0 SP8 : glibc (EulerOS-SA-2020-1152)	Nessus	Huawei Local Security Checks	high
133903	EulerOS 2.0 SP5 : glibc (EulerOS-SA-2020-1102)	Nessus	Huawei Local Security Checks	high

Detections

Analytics

CVE-2018-20796

high

Tenable Plugins

high

low

high

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medium

medium

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high

high