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

Releases

• Ubuntu 6.10
• Ubuntu 6.06

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 machine-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

• libnet-dns-perl - 0.53-2ubuntu1

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

References

• CVE-2007-3377
• CVE-2007-3409