CVE-2006-6811

MEDIUM

KsIRC 1.3.12 - Denial of Service via Long PRIVMSG String

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-6811. PoCs published by Federico L. Bossi Bonin.

AI-analyzed exploit summary This exploit demonstrates a remote buffer overflow in KSirc 1.3.12 via a crafted PRIVMSG command. It sends a large payload to trigger the vulnerability, potentially leading to remote code execution.

Description

KsIRC 1.3.12 allows remote attackers to cause a denial of service (crash) via a long PRIVMSG string when connecting to an Internet Relay Chat (IRC) server, which causes an assertion failure and results in a NULL pointer dereference. NOTE: this issue was originally reported as a buffer overflow.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Federico L. Bossi Bonin · cdoslinux
https://www.exploit-db.com/exploits/3023

This exploit demonstrates a remote buffer overflow in KSirc 1.3.12 via a crafted PRIVMSG command. It sends a large payload to trigger the vulnerability, potentially leading to remote code execution.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: KSirc 1.3.12
No auth needed
Prerequisites: Network access to the target IRC client
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (13)

Core 13
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/usn-409-1
Broken Link x_refsource_confirm
https://issues.rpath.com/browse/RPL-922
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/3023
Broken Link vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/5199
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/456379/100/0/threaded
Broken Link, Exploit, Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/21790
Broken Link vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDKSA-2007:009
Third Party Advisory x_refsource_confirm
http://www.kde.org/info/security/advisory-20070109-1.txt
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/31134
Broken Link vdb-entry x_refsource_osvdb
http://osvdb.org/33443
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1017453
Third Party Advisory vendor-advisory x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-200701-26.xml

Scores

CVSS v3 6.5
EPSS 0.0999
EPSS Percentile 95.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE
CWE-617
Status published
Products (4)
canonical/ubuntu_linux 5.10
canonical/ubuntu_linux 6.06
canonical/ubuntu_linux 6.10
kde/ksirc 1.3.12
Published Dec 29, 2006
Tracked Since Feb 18, 2026