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USN-777-1: Ntp vulnerabilities

19 May 2009

Ntp vulnerabilities

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Releases

Packages

Details

A stack-based buffer overflow was discovered in ntpq. If a user were
tricked into connecting to a malicious ntp server, a remote attacker could
cause a denial of service in ntpq, or possibly execute arbitrary code with
the privileges of the user invoking the program. (CVE-2009-0159)

Chris Ries discovered a stack-based overflow in ntp. If ntp was configured
to use autokey, a remote attacker could send a crafted packet to cause a
denial of service, or possibly execute arbitrary code. (CVE-2009-1252)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

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