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Amazon Linux 2 : elfutils (ALAS-2023-2259)

medium Nessus Plugin ID 181705

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

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.

Solution

Run 'yum update elfutils' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-2259.html

https://alas.aws.amazon.com/cve/html/CVE-2020-21047.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: Medium

ID: 181705

File Name: al2_ALAS-2023-2259.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/20/2023

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2020-21047

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:elfutils-libelf, p-cpe:/a:amazon:linux:elfutils-devel-static, p-cpe:/a:amazon:linux:elfutils-libelf-devel-static, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:elfutils, p-cpe:/a:amazon:linux:elfutils-libelf-devel, p-cpe:/a:amazon:linux:elfutils-libs, p-cpe:/a:amazon:linux:elfutils-default-yama-scope, p-cpe:/a:amazon:linux:elfutils-debuginfo, p-cpe:/a:amazon:linux:elfutils-devel

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/13/2023

Vulnerability Publication Date: 8/22/2023

Reference Information

CVE: CVE-2020-21047