USN-867-1: Ntp vulnerability

8 December 2009

Ntp vulnerability

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Releases

Packages

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.

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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.

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Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

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

References

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Further reading