CVE-2017-12942 Memory corruption in n/a

Critical 9.8 Published 18 Aug 2017 Updated 5 Aug 2024

A buffer overflow in the UnRAR library allows attackers to execute arbitrary code or cause denial of service via crafted archives.

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

What is CVE-2017-12942?

CVE-2017-12942 is a critical memory corruption vulnerability in n/a, published on 18 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libunrar.a in UnRAR before 5.5.7 has a buffer overflow in the Unpack::LongLZ function.

Weakness: CWE-119

Which versions are affected by CVE-2017-12942?

It affects 1 product.

Products include Rarlab Unrar.

How do I fix CVE-2017-12942?

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-2017-12942 being exploited?

There is no known exploitation of CVE-2017-12942 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2017-12942, GHSA-6cw7-hrcm-224w, UBUNTU-CVE-2017-12942.