1. Ubuntu Security Notices
  2. USN-432-2

USN-432-2: GnuPG2, GPGME vulnerability

Publication date

13 March 2007

Overview

GnuPG2, GPGME vulnerability

Releases

Details

USN-432-1 fixed a vulnerability in GnuPG. This update provides the
corresponding updates for GnuPG2 and the GPGME library.

Original advisory 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.

USN-432-1 fixed a vulnerability in GnuPG. This update provides the
corresponding updates for GnuPG2 and the GPGME library.

Original advisory 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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
6.10 edgy libgpgme11 –  1.1.2-2ubuntu0.1
gnupg2 –  1.9.21-0ubuntu5.3
6.06 dapper libgpgme11 –  1.1.0-1ubuntu0.1

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References

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