FrSIRT - Undernet ircu "send_user_mode()" Denial of Service Vulnerability / Exploit (Security Advisories)

French Security Incident Response Team

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Undernet ircu "send_user_mode()" Denial of Service Vulnerability

Title : Undernet ircu "send_user_mode()" Denial of Service Vulnerability
Advisory ID : FrSIRT/ADV-2008-0977
CVE ID : CVE-2008-1501
Rated as : Moderate Risk

Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2008-03-25

Advisory Details

Description

Affected Products

Solution

Technical Description

A vulnerability has been identified in Undernet ircu, which could be exploited by remote attackers to cause a denial of service. This issue is caused by an error in the "send_user_mode()" [s_user.c] function when processing specially crafted "/mode" commands, which could be exploited by attackers to crash an affected application, creating a denial of service condition.

Credits

Vulnerability reported by Chris Porter.

ChangeLog

2008-03-25 : Initial release

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