Debian Security Update DSA-4055 heimdal - security update

[LinuxBot]

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.

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