CVE-2009-4009 Memory corruption in n/a
Remote attackers can cause denial of service or execute arbitrary code via crafted packets in PowerDNS Recursor.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2009-4009?
CVE-2009-4009 is a critical memory corruption vulnerability in Powerdns Recursor, published on 8 Jan 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer overflow in PowerDNS Recursor before 3.1.7.2 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via crafted packets.
Weakness: CWE-119
Which versions are affected by CVE-2009-4009?
It affects 1 product.
Products include Powerdns Recursor.
How do I fix CVE-2009-4009?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2009-4009 being exploited?
There is no known exploitation of CVE-2009-4009 in the wild and no public exploit code.
Other vulnerabilities in Powerdns Recursor
- CVE-2020-10030 Memory corruption in n/a
- CVE-2025-59023 Crafted delegations or IP fragments can poison cached delegations in Recursor
- CVE-2025-59030 Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor
- CVE-2023-22617 Denial of service in n/a
- CVE-2018-16855 Memory corruption in pdns-recursor
Sources
Also known as DEBIAN-CVE-2009-4009, GHSA-x753-v6ch-rpgq.