CVE-2021-20271

Description

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

https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21

https://bugzilla.redhat.com/show_bug.cgi?id=1934125

https://security.gentoo.org/glsa/202107-43

https://www.starwindsoftware.com/security/sw-20220805-0002/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/

https://access.redhat.com/security/cve/CVE-2021-20271

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/

https://access.redhat.com/errata/RHSA-2021:4975

https://access.redhat.com/errata/RHBA-2021:2854

https://access.redhat.com/errata/RHSA-2021:2791

https://access.redhat.com/errata/RHSA-2021:4771

https://access.redhat.com/errata/RHSA-2021:4785

https://access.redhat.com/errata/RHSA-2021:2574

Details

Risk Information

CVSS v2

CVSS v3