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Insufficient Verification of Data Authenticity Affecting rpm package, versions <0:4.11.3-40.79.amzn1

0.0
medium

Snyk CVSS

    Attack Complexity High
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.23% (61st percentile)
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NVD
7 high
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SUSE
3.3 low
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Red Hat
6.7 medium

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  • Snyk ID SNYK-AMZN201803-RPM-1726142
  • published 27 Sep 2021
  • disclosed 26 Mar 2021
Report a new vulnerability Found a mistake?

Introduced: 26 Mar 2021

CVE-2021-20271 Open this link in a new tab
CWE-345 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 rpm to version 0:4.11.3-40.79.amzn1 or higher.
This issue was patched in ALAS-2021-1521.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rpm package and not the rpm package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

References