CVE-2009-3704

ZoIPer < 2.24 - Denial of Service via Empty Call-Info Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-3704. PoCs published by Tomer Bitton.

AI-analyzed exploit summary This exploit sends a malformed SIP INVITE packet to ZoIPer v2.22, triggering a remote denial of service (DoS) due to improper handling of the Call-Info header. The packet is crafted to crash the application on Windows XP SP2/SP3 and Ubuntu 8.10.

Description

ZoIPer 2.22, and possibly other versions before 2.24 Library 5324, allows remote attackers to cause a denial of service (crash) via a SIP INVITE request with an empty Call-Info header.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Tomer Bitton · pythondosmultiple
https://www.exploit-db.com/exploits/9987

This exploit sends a malformed SIP INVITE packet to ZoIPer v2.22, triggering a remote denial of service (DoS) due to improper handling of the Call-Info header. The packet is crafted to crash the application on Windows XP SP2/SP3 and Ubuntu 8.10.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: ZoIPer v2.22
No auth needed
Prerequisites: Network access to the target's SIP port (5060/UDP)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37015
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/53792

Scores

EPSS 0.0814
EPSS Percentile 94.1%

Details

Status published
Products (4)
zoiper/zoiper 2.0
zoiper/zoiper 2.10
zoiper/zoiper 2.11
zoiper/zoiper < 2.22
Published Oct 16, 2009
Tracked Since Feb 18, 2026