CVE-2007-1662 Denial of service in n/a

Medium 5.0 Published 7 Nov 2007 Updated 7 Aug 2024

A flaw in the PCRE library allows attackers to cause a denial of service via crafted regex patterns, impacting applications using this 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-2007-1662?

CVE-2007-1662 is a medium-severity denial of service 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 reads past the end of the string when searching for unmatched brackets and parentheses, which allows context-dependent attackers to cause a denial of service (crash), possibly involving forward references.

Which versions are affected by CVE-2007-1662?

It affects 1 product.

Products include Pcre Pcre.

How do I fix CVE-2007-1662?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2007-1662 being exploited?

There is no known exploitation of CVE-2007-1662 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2007-1662, GHSA-q97c-6vfp-vgp5.