CVE-2002-0004 Use after free in n/a

High 7.2 Published 25 Jun 2002 Updated 8 Aug 2024

Local attackers can execute arbitrary code via heap corruption in the at command, potentially escalating privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2002-0004?

CVE-2002-0004 is a high-severity use after free vulnerability in Debian Debian Linux, published on 25 Jun 2002. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Heap corruption vulnerability in the "at" program allows local users to execute arbitrary code via a malformed execution time, which causes at to free the same memory twice.

Which versions are affected by CVE-2002-0004?

It affects 9 products.

Products include Caldera Openlinux Server, Caldera Openlinux Workstation, Debian Debian Linux, Freebsd Freebsd, Mandrakesoft Mandrake Linux, Netbsd Netbsd and 3 more.

How do I fix CVE-2002-0004?

No fix has been published for CVE-2002-0004 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2002-0004 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2002-0004 exists.

Public exploit code: 1 Exploit-DB entry.

All Debian Debian Linux vulnerabilities

Sources

Also known as GHSA-hv62-hp8h-9vjg.