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USN-432-1: GnuPG vulnerability

8 March 2007

GnuPG vulnerability

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Releases

Details

Gerardo Richarte from Core Security Technologies discovered that when
gnupg is used without --status-fd, there is no way to distinguish
initial unsigned messages from a following signed message. An attacker
could inject an unsigned message, which could fool the user into
thinking the message was entirely signed by the original sender.

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 6.10
  • gnupg - 1.4.3-2ubuntu3.3
Ubuntu 6.06
  • gnupg - 1.4.2.2-1ubuntu2.5
Ubuntu 5.10
  • gnupg - 1.4.1-1ubuntu1.7

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

References

Related notices

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Further reading