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Bug 787944 (CVE-2021-20266) - <app-arch/rpm-4.16.1.3: Out of bounds read in rpmdb parser (CVE-2021-20266)
Summary: <app-arch/rpm-4.16.1.3: Out of bounds read in rpmdb parser (CVE-2021-20266)
Status: IN_PROGRESS
Alias: CVE-2021-20266
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
URL:
Whiteboard: B3 [upstream/ebuild]
Keywords:
Depends on:
Blocks:
 
Reported: 2021-05-03 17:53 UTC by Sam James
Modified: 2021-05-03 17:55 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Sam James archtester gentoo-dev Security 2021-05-03 17:53:47 UTC
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."

Patch: https://github.com/rpm-software-management/rpm/pull/1500

Note that the rpmdb is going to be a root only resource anyway so this is a bit niche in terms of exploitability.