CVE-2013-6490

Pidgin < 2.10.8 - Buffer Overflow via SIMPLE Protocol Negative Content-Length Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2013-6490. PoCs published by Everdoh.

AI-analyzed exploit summary This PoC demonstrates a denial-of-service (DoS) vulnerability in SIP-based systems by sending a malformed SIP MESSAGE request with a negative Content-Length header. The server crashes or behaves unpredictably when processing the request.

Description

The SIMPLE protocol functionality in Pidgin before 2.10.8 allows remote attackers to have an unspecified impact via a negative Content-Length header, which triggers a buffer overflow.

Exploits (1)

nomisec WORKING POC
by Everdoh · poc
https://github.com/Everdoh/CVE-2013-6490

This PoC demonstrates a denial-of-service (DoS) vulnerability in SIP-based systems by sending a malformed SIP MESSAGE request with a negative Content-Length header. The server crashes or behaves unpredictably when processing the request.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: SIP-based systems (e.g., VoIP servers)
No auth needed
Prerequisites: Network access to the target SIP server
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://rhn.redhat.com/errata/RHSA-2014-0139.html
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2014/dsa-2859
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2100-1
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/65195
Vendor Advisory x_refsource_confirm
http://www.pidgin.im/news/security/?id=84
Various Sources x_refsource_confirm
http://hg.pidgin.im/pidgin/main/rev/6bd2dd10e5da

Scores

EPSS 0.1481
EPSS Percentile 96.3%

Details

CWE
CWE-119
Status published
Products (50)
pidgin/pidgin 2.0.0
pidgin/pidgin 2.0.1
pidgin/pidgin 2.0.2
pidgin/pidgin 2.1.0
pidgin/pidgin 2.1.1
pidgin/pidgin 2.2.0
pidgin/pidgin 2.2.1
pidgin/pidgin 2.2.2
pidgin/pidgin 2.3.0
pidgin/pidgin 2.3.1
... and 40 more
Published Feb 06, 2014
Tracked Since Feb 18, 2026