CVE-2009-4491 Code injection in n/a

Critical 9.8 Published 13 Jan 2010 Updated 7 Aug 2024

Remote attackers can inject terminal escape sequences into logs, potentially executing arbitrary commands or modifying files via crafted HTTP requests.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2009-4491?

CVE-2009-4491 is a critical code injection vulnerability in n/a, published on 13 Jan 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

thttpd 2.25b0 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

Weakness: CWE-20, CWE-94

Which versions are affected by CVE-2009-4491?

It affects 1 product.

Products include Acme Thttpd.

How do I fix CVE-2009-4491?

No fix has been published for CVE-2009-4491 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2009-4491 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-4491 exists.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-hpcm-8c4f-v6x2.