USN-483-1: libnet-dns-perl vulnerabilities

13 July 2007

libnet-dns-perl vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

Details

Peter Johannes Holzer discovered that the Net::DNS Perl module had predictable sequence numbers. This could allow remote attackers to carry out DNS spoofing, leading to possible man-in-the-middle attacks. (CVE-2007-3377)

Steffen Ullrich discovered that the Net::DNS Perl module did not correctly detect recursive compressed responses. A remote attacker could send a specially crafted packet, causing applications using Net::DNS to crash or monopolize CPU resources, leading to a denial of service. (CVE-2007-3409)

Update instructions

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

Ubuntu 6.10
libnet-dns-perl - 0.57-1ubuntu1
Ubuntu 6.06 LTS
libnet-dns-perl - 0.53-2ubuntu1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system upgrade you need to reboot your computer to effect the necessary changes.

References