CVE-2021-20266

Medium

Description

A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.

SeverityMedium

CVSS4.9

Exploit probability—

Product

Rpm

PublishedApr 30, 2021

First seenApr 30, 2021

Weakness typeCWE-125Out-of-bounds read

How to fix

Update

rpm rpm4.16.1.3 or later

Vendor advisories

security.gentoo.org/glsa/202107-43

Affected products

Product	Affected versions	Fixed in
rpm rpm	v < 4.16.1.3	4.16.1.3
fedoraproject fedora	33, 34	—

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