Debian Security Advisory
DSA-4055-1 heimdal -- security update
- Date Reported:
- 07 Dec 2017
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 878144.
In Mitre's CVE dictionary: CVE-2017-17439.
- More information:
Michael Eder and Thomas Kittel discovered that Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos, did not correctly handle ASN.1 data. This would allow an unauthenticated remote attacker to cause a denial of service (crash of the KDC daemon) by sending maliciously crafted packets.
For the stable distribution (stretch), this problem has been fixed in version 7.1.0+dfsg-13+deb9u2.
We recommend that you upgrade your heimdal packages.
For the detailed security status of heimdal please refer to its security tracker page at: https://security-tracker.debian.org/tracker/heimdal