The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1, contains an integer overflow vulnerability (for "Create an array for saving the template argument values") that can trigger a heap-based buffer overflow, as demonstrated by nm.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1,     contains an integer overflow vulnerability (for Create an array for saving the template argument values)     that can trigger a heap-based buffer overflow, as demonstrated by nm. (CVE-2018-20673)

Note that Nessus relies on the presence of the package as reported by the vendor.

An update of the crash package has been released.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:4386 advisory.

  - The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1,     contains an integer overflow vulnerability (for Create an array for saving the template argument values)     that can trigger a heap-based buffer overflow, as demonstrated by nm. (CVE-2018-20673)

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

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2021:4386 advisory.

  - The demangle_template function in cplus-dem.c in GNU libiberty, as distributed in GNU Binutils 2.31.1,     contains an integer overflow vulnerability (for Create an array for saving the template argument values)     that can trigger a heap-based buffer overflow, as demonstrated by nm. (CVE-2018-20673)

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 a vulnerability as referenced in the ELSA-2021-4386 advisory.

    - CVE-2018-12207 / Intel SKX102       OL8 gcc: Intel Mitigation for CVE: CVE-2018-12207

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

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 a vulnerability as referenced in the CESA-2021:4386 advisory.

  - libiberty: Integer overflow in demangle_template() function (CVE-2018-20673)

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the RHSA-2021:4386 advisory.

    The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as     related support libraries.

    Security Fix(es):

    * libiberty: Integer overflow in demangle_template() function (CVE-2018-20673)

    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 8.5 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 this issue but has instead relied only on the application's self-reported version number.

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

  - The demangle_template function in cplus-dem.c in GNU     libiberty, as distributed in GNU Binutils 2.31.1,     contains an integer overflow vulnerability (for 'Create     an array for saving the template argument values') that     can trigger a heap-based buffer overflow, as     demonstrated by nm.(CVE-2018-20673)

  - The demangle_template function in cplus-dem.c in GNU     libiberty, as distributed in GNU Binutils 2.31.1, has a     memory leak via a crafted string, leading to a denial     of service (memory consumption), as demonstrated by     cxxfilt, a related issue to     CVE-2018-12698.(CVE-2018-20657)

  - The get_count function in cplus-dem.c in GNU libiberty,     as distributed in GNU Binutils 2.31, allows remote     attackers to cause a denial of service (malloc called     with the result of an integer-overflowing calculation)     or possibly have unspecified other impact via a crafted     string, as demonstrated by c++filt.(CVE-2018-18483)

  - An issue was discovered in GNU libiberty, as     distributed in GNU Binutils 2.32.
    simple_object_elf_match in simple-object-elf.c does not     check for a zero shstrndx value, leading to an integer     overflow and resultant heap-based buffer     overflow.(CVE-2019-14250)

  - An issue was discovered in GNU libiberty, as     distributed in GNU Binutils 2.32. It is a heap-based     buffer over-read in d_expression_1 in cp-demangle.c     after many recursive calls.(CVE-2019-9070)

  - An issue was discovered in the Binary File Descriptor     (BFD) library (aka libbfd), as distributed in GNU     Binutils 2.32. It is an attempted excessive memory     allocation in elf_read_notes in elf.c.(CVE-2019-9076)

  - An issue was discovered in the Binary File Descriptor     (BFD) library (aka libbfd), as distributed in GNU     Binutils 2.32. It is an out-of-bounds read leading to a     SEGV in bfd_getl32 in libbfd.c, when called from     pex64_get_runtime_function in     pei-x86_64.c.(CVE-2019-9074)

  - An issue was discovered in GNU libiberty, as     distributed in GNU Binutils 2.32. It is a stack     consumption issue in d_count_templates_scopes in     cp-demangle.c after many recursive     calls.(CVE-2019-9071)

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
222187	Linux Distros Unpatched Vulnerability : CVE-2018-20673	Nessus	Misc.	medium
203822	Photon OS 3.0: Crash PHSA-2023-3.0-0601	Nessus	PhotonOS Local Security Checks	critical
203529	Photon OS 4.0: Crash PHSA-2023-4.0-0414	Nessus	PhotonOS Local Security Checks	critical
184845	Rocky Linux 8 : gcc (RLSA-2021:4386)	Nessus	Rocky Linux Local Security Checks	medium
157537	AlmaLinux 8 : gcc (ALSA-2021:4386)	Nessus	Alma Linux Local Security Checks	medium
155435	Oracle Linux 8 : gcc (ELSA-2021-4386)	Nessus	Oracle Linux Local Security Checks	medium
155156	CentOS 8 : gcc (CESA-2021:4386)	Nessus	CentOS Local Security Checks	medium
155150	RHEL 8 : gcc (RHSA-2021:4386)	Nessus	Red Hat Local Security Checks	medium
133976	EulerOS 2.0 SP8 : binutils (EulerOS-SA-2020-1142)	Nessus	Huawei Local Security Checks	high

Detections

Analytics

CVE-2018-20673

medium

Tenable Plugins

medium

critical

critical

medium

medium

medium

medium

medium

high