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USN-762-1: APT vulnerabilities

20 April 2009

APT vulnerabilities




Alexandre Martani discovered that the APT daily cron script did not check
the return code of the date command. If a machine is configured for
automatic updates and is in a time zone where DST occurs at midnight, under
certain circumstances automatic updates might not be applied and could
become permanently disabled. (CVE-2009-1300)

Michael Casadevall discovered that APT did not properly verify repositories
signed with a revoked or expired key. If a repository were signed with only
an expired or revoked key and the signature was otherwise valid, APT would
consider the repository valid. (

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.