Xchat up to 2.0.8 SOCKS5 Proxy stack-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Xchat. Impacted is an unknown function of the component SOCKS5 Proxy Handler. This manipulation causes stack-based overflow. This vulnerability is registered as CVE-2004-0409. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Xchat (Chat Software). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component SOCKS5 Proxy Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the Socks-5 proxy code for XChat 1.8.0 to 2.0.8, with socks5 traversal enabled, allows remote attackers to execute arbitrary code.

The bug was discovered 04/05/2004. The weakness was published 04/19/2004 by tsifra (Website). It is possible to read the advisory at xchat.org. This vulnerability is known as CVE-2004-0409 since 04/16/2004. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by vade79 in ANSI C and been published 3 weeks after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 14480 (GLSA-200404-15 : XChat 2.0.x SOCKS5 Vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (22696), Exploit-DB (296), Tenable (14480), SecurityFocus (BID 10168†) and OSVDB (5490†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Chat Software

Name

• Xchat

Version

• 1.8.0
• 1.8.1
• 1.8.2
• 1.8.3
• 1.8.4
• 1.8.5
• 1.8.6
• 1.8.7
• 1.8.8
• 1.8.9
• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3
• 1.9.4
• 1.9.5
• 1.9.6
• 1.9.7
• 1.9.8
• 1.9.9
• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: vade79
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 14480
Nessus Name: GLSA-200404-15 : XChat 2.0.x SOCKS5 Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53185
OpenVAS Name: Debian Security Advisory DSA 493-1 (xchat)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

04/05/2004 🔍
04/05/2004 +0 days 🔍
04/05/2004 +0 days 🔍
04/16/2004 +11 days 🔍
04/19/2004 +3 days 🔍
04/19/2004 +0 days 🔍
04/19/2004 +0 days 🔍
04/19/2004 +0 days 🔍
05/05/2004 +15 days 🔍
05/05/2004 +0 days 🔍
06/01/2004 +27 days 🔍
08/30/2004 +90 days 🔍
05/05/2009 +1709 days 🔍
10/16/2014 +1990 days 🔍
01/02/2025 +3731 days 🔍

Sourcesinfo

Advisory: xchat.org
Researcher: tsifra
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2004-0409 (🔍)
GCVE (CVE): GCVE-0-2004-0409
GCVE (VulDB): GCVE-100-21895

OVAL: 🔍

X-Force: 22696
SecurityFocus: 10168 - XChat SOCKS 5 Remote Buffer Overrun Vulnerability
Secunia: 11409
OSVDB: 5490 - XChat Socks-5 Overflow
Vulnerability Center: 21887 - XChat 1.8.0 - 2.0.8 Socks-5 Remote Arbitrary Code Execution Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/16/2014 17:33
Updated: 01/02/2025 03:55
Changes: 10/16/2014 17:33 (87), 09/02/2019 17:01 (3), 01/02/2025 03:55 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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