Valve Software Source Engine Format String Vulnerability

BID:36061

Info

Valve Software Source Engine Format String Vulnerability

Bugtraq ID: 36061
Class: Input Validation Error
CVE:
Remote: Yes
Local: No
Published: Aug 17 2009 12:00AM
Updated: Aug 21 2009 07:53PM
Credit: Luigi Auriemma
Vulnerable: Valve Software Source Engine build 3698
Valve Software Half-Life 2
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows ME
- Microsoft Windows NT 4.0
Valve Software Counter-Strike: Source 0
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows ME
- Microsoft Windows NT 4.0
Not Vulnerable:

Discussion

Valve Software Source Engine Format String Vulnerability

Source Engine is prone to a format-string vulnerability because it fails to properly sanitize user-supplied input before passing it as the format specifier to a formatted-printing function.

An attacker may exploit this issue to execute arbitrary code in the context of the vulnerable application. Failed exploit attempts will likely result in a denial-of-service condition.

Source Engine 3968 and prior builds are affected.

Exploit / POC

Valve Software Source Engine Format String Vulnerability

The following proofs of concept are available:

Solution / Fix

Valve Software Source Engine Format String Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

References

Valve Software Source Engine Format String Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report