CVE-2008-4126 Security feature bypass in n/a

Medium 6.4 Published 18 Sep 2008 Updated 16 Sep 2024

Remote attackers can spoof DNS responses due to predictable source ports and transaction IDs in the PyDNS library.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2008-4126?

CVE-2008-4126 is a medium-severity vulnerability in n/a, published on 18 Sep 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PyDNS (aka python-dns) before 2.3.1-5 in Debian GNU/Linux does not use random source ports for DNS requests and does not use random transaction IDs for DNS retries, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447. NOTE: this vulnerability exists because of an incomplete fix for CVE-2008-4099.

Weakness: CWE-16

Which versions are affected by CVE-2008-4126?

It affects 1 product.

Products include Debian Python-Dns.

How do I fix CVE-2008-4126?

Upgrade to a fixed version.

Is CVE-2008-4126 being exploited?

There is no known exploitation of CVE-2008-4126 in the wild and no public exploit code.

CVE-2008-4099 Security feature bypass in n/a Medium 6.4

Sources

Also known as GHSA-x9xp-g2q8-6p6h.