CVE-2009-1086 Memory corruption in n/a

Medium 6.4 Published 25 Mar 2009 Updated 7 Aug 2024

Remote attackers can cause denial of service or execute arbitrary code via a malformed DNS resource record in the ldns 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-2009-1086?

CVE-2009-1086 is a medium-severity memory corruption vulnerability in n/a, published on 25 Mar 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via a DNS resource record (RR) with a long (1) class field (clas variable) and possibly (2) TTL field.

Weakness: CWE-399

Which versions are affected by CVE-2009-1086?

It affects 1 product.

Products include Nlnetlabs Ldns.

How do I fix CVE-2009-1086?

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-2009-1086 being exploited?

There is no known exploitation of CVE-2009-1086 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2009-1086, DSA-1795-1, GHSA-5957-cmgf-chq8.