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Out-of-bounds Write Affecting elfutils-libelf package, versions <0:0.176-2.amzn2.0.2

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Availability High

    Threat Intelligence

    EPSS 0.04% (10th percentile)
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NVD
5.5 medium

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  • Snyk ID SNYK-AMZN2-ELFUTILSLIBELF-5912533
  • published 21 Sep 2023
  • disclosed 22 Aug 2023
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Introduced: 22 Aug 2023

CVE-2020-21047 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 elfutils-libelf to version 0:0.176-2.amzn2.0.2 or higher.
This issue was patched in ALAS2-2023-2259.

NVD Description

Note: Versions mentioned in the description apply only to the upstream elfutils-libelf package and not the elfutils-libelf package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.