CVE-2007-4767 Memory corruption in n/a

Medium 5.0 Published 7 Nov 2007 Updated 7 Aug 2024

Attackers can trigger infinite loops, crashes, or arbitrary code execution in applications using the PCRE library via malformed regex sequences.

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

What is CVE-2007-4767?

CVE-2007-4767 is a medium-severity memory corruption vulnerability in n/a, published on 7 Nov 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Perl-Compatible Regular Expression (PCRE) library before 7.3 does not properly compute the length of (1) a \p sequence, (2) a \P sequence, or (3) a \P{x} sequence, which allows context-dependent attackers to cause a denial of service (infinite loop or crash) or execute arbitrary code.

Which versions are affected by CVE-2007-4767?

It affects 1 product.

Products include Pcre Pcre.

How do I fix CVE-2007-4767?

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-2007-4767 being exploited?

There is no known exploitation of CVE-2007-4767 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2007-4767, GHSA-9cw9-v886-c24m.