The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

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The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3579 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3579-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     September 23, 2023                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : elfutils     Version        : 0.176-1.1+deb10u1     CVE ID         : CVE-2020-21047


    An issue has been found in elfutils, a collection of utilities to handle     ELF objects.
    Due to missing bound checks and reachable asserts, an attacker can     use crafted elf files to trigger application crashes that result in     denial-of-services.


    For Debian 10 buster, this problem has been fixed in version     0.176-1.1+deb10u1.

    We recommend that you upgrade your elfutils packages.

    For the detailed security status of elfutils please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/elfutils

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 version of elfutils installed on the remote host is prior to 0.176-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2259 advisory.

    The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from     denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-     by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need     to craft certain ELF files which bypass the missing bound checks. (CVE-2020-21047)

Tenable has extracted the preceding description block directly from the tested product 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 Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6322-1 advisory.

    It was discovered that elfutils incorrectly handled certain malformed files. If a user or automated system     were tricked into processing a specially crafted file, elfutils could be made to crash or consume     resources, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2018-16062,     CVE-2018-16403, CVE-2018-18310, CVE-2018-18520, CVE-2018-18521, CVE-2019-7149, CVE-2019-7150,     CVE-2019-7665)

    It was discovered that elfutils incorrectly handled bounds checks in certain functions when processing     malformed files. If a user or automated system were tricked into processing a specially crafted file,     elfutils could be made to crash or consume resources, resulting in a denial of service. (CVE-2020-21047,     CVE-2021-33294)

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.

ID	Name	Product	Family	Severity
504146	Siemens SIMATIC S7-1500 Out-of-bounds Write (CVE-2020-21047)	Tenable OT Security	Tenable.ot	medium
181835	Debian dla-3579 : elfutils - security update	Nessus	Debian Local Security Checks	medium
181705	Amazon Linux 2 : elfutils (ALAS-2023-2259)	Nessus	Amazon Linux Local Security Checks	medium
180321	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS : elfutils vulnerabilities (USN-6322-1)	Nessus	Ubuntu Local Security Checks	medium

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CVE-2020-21047

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