An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.

The remote NewStart CGSL host, running version MAIN 6.02, has glibc packages installed that are affected by multiple vulnerabilities:

  - An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on     PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the     frame address, resulting in a denial of service or potential code execution. The highest threat from this     vulnerability is to system availability. (CVE-2020-1751)

  - 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)

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

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:4444 advisory.

  - glibc: stack corruption from crafted input in cosl, sinl, sincosl, and tanl functions (CVE-2020-10029)

  - glibc: array overflow in backtrace functions for powerpc (CVE-2020-1751)

  - glibc: use-after-free in glob() function when expanding ~user (CVE-2020-1752)

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4444 advisory.

    - CVE-2020-1751: Fix an array overflow in backtrace on PowerPC. (#1813399)
    - CVE-2020-10029: Prevent stack corruption from crafted input in cosl, sinl,       sincosl, and tanl function. (#1811796)

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 remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4444 advisory.

    The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard     math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system.
    Without these libraries, the Linux system cannot function correctly.

    Security Fix(es):

    * glibc: array overflow in backtrace functions for powerpc (CVE-2020-1751)

    * glibc: use-after-free in glob() function when expanding ~user (CVE-2020-1752)

    * glibc: stack corruption from crafted input in cosl, sinl, sincosl, and tanl functions (CVE-2020-10029)

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

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

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 :

  - An out-of-bounds write vulnerability was found in glibc     when handling signal trampolines on PowerPC. The     backtrace function did not properly check the array     bounds when storing the frame address resulting in a     denial of service or potential code execution. The     highest threat from this vulnerability is to system     availability.(CVE-2020-1751)

  - A signed comparison vulnerability was found in GNU libc     in the ARMv7 implementation of memcpy(). The flaw     affects the third argument to memcpy() that specifies     the number of bytes to copy. An underflow on the third     argument could lead to undefined behavior such as     out-of-bounds memory write and potentially remote code     execution.(CVE-2020-6096)

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.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4416-1 advisory.

    Florian Weimer discovered that the GNU C Library incorrectly handled certain memory operations. A remote     attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or     possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-12133)

    It was discovered that the GNU C Library incorrectly handled certain SSE2-optimized memmove operations. A     remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-18269)

    It was discovered that the GNU C Library incorrectly handled certain pathname operations. A remote     attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or     possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-11236)

    It was discovered that the GNU C Library incorrectly handled certain AVX-512-optimized mempcpy operations.
    A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-11237)

    It was discovered that the GNU C Library incorrectly handled certain hostname loookups. A remote attacker     could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly     execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-19591)

    Jakub Wilk discovered that the GNU C Library incorrectly handled certain memalign functions. A remote     attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or     possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-6485)

    It was discovered that the GNU C Library incorrectly ignored the LD_PREFER_MAP_32BIT_EXEC environment     variable after security transitions. A local attacker could use this issue to bypass ASLR restrictions.
    (CVE-2019-19126)

    It was discovered that the GNU C Library incorrectly handled certain regular expressions. A remote     attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of     service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-9169)

    It was discovered that the GNU C Library incorrectly handled certain bit patterns. A remote attacker could     use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute     arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2020-10029)

    It was discovered that the GNU C Library incorrectly handled certain signal trampolines on PowerPC. A     remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of     service, or possibly execute arbitrary code. (CVE-2020-1751)

    It was discovered that the GNU C Library incorrectly handled tilde expansion. A remote attacker could use     this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute     arbitrary code. (CVE-2020-1752)

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

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

According to the version of the glibc packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - An out-of-bounds write vulnerability was found in glibc     before 2.31 when handling signal trampolines on     PowerPC. Specifically, the backtrace function did not     properly check the array bounds when storing the frame     address, resulting in a denial of service or potential     code execution. The highest threat from this     vulnerability is to system availability.(CVE-2020-1751)

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.

The remote host is affected by the vulnerability described in GLSA-202006-04 (glibc: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in glibc. Please review       the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

According to the version of the glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - When unwinding through a signal frame the backtrace     function on PowerPC didn't check array bounds when     storing the frame address.(CVE-2020-1751)

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 incorporates fixes from the upstream glibc 2.29 stable release branch, including 3 fixes for medium severity security vulnerabilities. (CVE-2020-10029, CVE-2020-1752, CVE-2020-1751)

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.

This update incorporates fixes from the upstream glibc 2.30 stable release branch, including 3 fixes for medium severity security vulnerabilities. (CVE-2020-10029, CVE-2020-1752, CVE-2020-1751)

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.

This update for glibc fixes the following issues :

CVE-2020-1752: Fixed a use after free in glob which could have allowed a local attacker to create a specially crafted path that, when processed by the glob function, could potentially have led to arbitrary code execution (bsc#1167631).

CVE-2020-1751: Fixed an array overflow in backtrace for PowerPC (bsc#1158996).

CVE-2020-10029: Fixed a stack-based buffer overflow during range reduction (bsc#1165784).

Use 'posix_spawn' on popen preventing crash caused by 'subprocess'.
(bsc#1149332, BZ #22834)

Fix handling of needles crossing a page, preventing incorrect results to return during the cross page boundary search. (bsc#1157893, BZ #25226)

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.

ID	Name	Product	Family	Severity
147246	NewStart CGSL MAIN 6.02 : glibc Multiple Vulnerabilities (NS-SA-2021-0069)	Nessus	NewStart CGSL Local Security Checks	high
145977	CentOS 8 : glibc (CESA-2020:4444)	Nessus	CentOS Local Security Checks	high
142780	Oracle Linux 8 : glibc (ELSA-2020-4444)	Nessus	Oracle Linux Local Security Checks	high
142396	RHEL 8 : glibc (RHSA-2020:4444)	Nessus	Red Hat Local Security Checks	high
140326	EulerOS Virtualization for ARM 64 3.0.2.0 : glibc (EulerOS-SA-2020-1956)	Nessus	Huawei Local Security Checks	high
138166	Ubuntu 16.04 LTS / 18.04 LTS : GNU C Library vulnerabilities (USN-4416-1)	Nessus	Ubuntu Local Security Checks	critical
137804	EulerOS Virtualization for ARM 64 3.0.6.0 : glibc (EulerOS-SA-2020-1697)	Nessus	Huawei Local Security Checks	high
137441	GLSA-202006-04 : glibc: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
136857	EulerOS 2.0 SP8 : glibc (EulerOS-SA-2020-1579)	Nessus	Huawei Local Security Checks	high
135372	Fedora 30 : glibc (2020-7f625c5ea8)	Nessus	Fedora Local Security Checks	high
135209	Fedora 31 : glibc (2020-244efc27af)	Nessus	Fedora Local Security Checks	high
135165	SUSE SLES12 Security Update : glibc (SUSE-SU-2020:0832-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2020-1751

high

Tenable Plugins

high

high

high

high

high

critical

high

critical

high

high

high

high