CVE-2007-4770 Memory corruption in n/a

Medium 6.8 Published 28 Jan 2008 Updated 7 Aug 2024

Out-of-bounds memory access in ICU library regex processing allows attackers to execute code or cause denial of service.

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

What is CVE-2007-4770?

CVE-2007-4770 is a medium-severity memory corruption vulnerability in n/a, published on 28 Jan 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.

Weakness: CWE-399

Which versions are affected by CVE-2007-4770?

It affects 1 product.

Products include Icu-Project International Components for Unicode.

How do I fix CVE-2007-4770?

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-2007-4770 being exploited?

There is no known exploitation of CVE-2007-4770 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2007-4770, GHSA-3hvj-9j8h-vgr2.