Debian Security Advisory

DSA-5344-1 heimdal -- security update

Date Reported:
08 Feb 2023
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1030849.
In Mitre's CVE dictionary: CVE-2022-45142.
More information:

Helmut Grohne discovered a flaw in Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos. The backports of fixes for CVE-2022-3437 accidentally inverted important memory comparisons in the arcfour-hmac-md5 and rc4-hmac integrity check handlers for gssapi, resulting in incorrect validation of message integrity codes.

For the stable distribution (bullseye), this problem has been fixed in version 7.7.0+dfsg-2+deb11u3.

We recommend that you upgrade your heimdal packages.

For the detailed security status of heimdal please refer to its security tracker page at: