USN-867-1: Ntp vulnerability

Releases

• Ubuntu 9.10
• Ubuntu 9.04
• Ubuntu 8.10
• Ubuntu 8.04
• Ubuntu 6.06

Packages

• ntp -

Details

Robin Park and Dmitri Vinokurov discovered a logic error in ntpd. A remote
attacker could send a crafted NTP mode 7 packet with a spoofed IP address
of an affected server and cause a denial of service via CPU and disk
resource consumption.

Update instructions

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

Ubuntu 9.10

• ntp - 1:4.2.4p6+dfsg-1ubuntu5.1

Ubuntu 9.04

• ntp - 1:4.2.4p4+dfsg-7ubuntu5.2

Ubuntu 8.10

• ntp - 1:4.2.4p4+dfsg-6ubuntu2.4

Ubuntu 8.04

• ntp - 1:4.2.4p4+dfsg-3ubuntu2.3

Ubuntu 6.06

• ntp-server - 1:4.2.0a+stable-8.1ubuntu6.3
• ntp - 1:4.2.0a+stable-8.1ubuntu6.3

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

References

• CVE-2009-3563