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USN-1131-1: Postfix vulnerability

11 May 2011

An attacker could send crafted input to Postfix and cause it to crash or run programs.

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Releases

Packages

  • postfix - High-performance mail transport agent

Details

Thomas Jarosch discovered that Postfix incorrectly handled authentication
mechanisms other than PLAIN and LOGIN when the Cyrus SASL library is used.
A remote attacker could use this to cause Postfix to crash, leading to a
denial of service, or possibly execute arbitrary code as the postfix user.

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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 8.04
Ubuntu 6.06
Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

In general, a standard system update will make all the necessary changes.

References

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Further reading