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Debian Security Advisory DSA 4055-1 (heimdal - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
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.
Affected Software
Affected Software
heimdal on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
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 linked in the references.