CVE-2021-20271

Publication date 26 March 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rpm	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Ignored
	21.04 hirsute	Ignored
	20.10 groovy	Ignored
	20.04 LTS focal	Fixed 4.14.2.1+dfsg1-1ubuntu0.1~esm1 Ubuntu Pro
	18.04 LTS bionic	Fixed 4.14.1+dfsg1-2ubuntu0.1~esm1 Ubuntu Pro
	16.04 LTS xenial	Fixed 4.12.0.1+dfsg1-3ubuntu0.1~esm1 Ubuntu Pro
	14.04 LTS trusty	Vulnerable

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Notes

seth-arnold

Only debugedit and librpmio9 binary packages are in main, and triaged with view to how they are used in the build process as described in https://bugs.launchpad.net/ubuntu/+source/rpm/+bug/1913871

Severity score breakdown

Parameter	Value
Base score	7.0 · High
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-5273-1
RPM Package Manager vulnerabilities
21 July 2022