USN-705-1: NTP vulnerability

Releases

• Ubuntu 8.10
• Ubuntu 8.04
• Ubuntu 7.10
• Ubuntu 6.06

Packages

• ntp -

Details

It was discovered that NTP did not properly perform signature verification.
A remote attacker could exploit this to bypass certificate validation via
a malformed SSL/TLS signature.

Update instructions

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

Ubuntu 8.10

• ntp - 1:4.2.4p4+dfsg-6ubuntu2.2

Ubuntu 8.04

• ntp - 1:4.2.4p4+dfsg-3ubuntu2.1

Ubuntu 7.10

• ntp - 1:4.2.4p0+dfsg-1ubuntu2.1

Ubuntu 6.06

• ntp-simple - 1:4.2.0a+stable-8.1ubuntu6.1
• ntp-refclock - 1:4.2.0a+stable-8.1ubuntu6.1

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

References

• CVE-2009-0021