Ubuntu Security Notice USN-835-1
21st September, 2009
neon, neon27 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
Software description
- neon
- neon27
Details
Joe Orton discovered that neon did not correctly handle SSL certificates
with zero bytes in the Common Name. A remote attacker could exploit this
to perform a man in the middle attack to view sensitive information or
alter encrypted communications.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.04:
- libneon27-gnutls 0.28.2-6.1ubuntu0.1
- libneon27 0.28.2-6.1ubuntu0.1
- Ubuntu 8.10:
- libneon27-gnutls 0.28.2-2ubuntu0.1
- libneon27 0.28.2-2ubuntu0.1
- Ubuntu 8.04 LTS:
- libneon27-gnutls 0.27.2-1ubuntu0.1
- libneon27 0.27.2-1ubuntu0.1
- Ubuntu 6.06 LTS:
- libneon25 0.25.5.dfsg-5ubuntu0.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.