CVE-2003-0143

qpopper 4.0.x < 4.0.5fc2 - Authenticated Buffer Overflow via Long Macro Name in mdef Command

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2003-0143. PoCs published by Florian Heinz.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Qpopper 4.0.4 and earlier via the 'mdef' command, allowing remote code execution. It uses a brute-force approach to determine the correct buffer size and return address for successful exploitation.

Description

The pop_msg function in qpopper 4.0.x before 4.0.5fc2 does not null terminate a message buffer after a call to Qvsnprintf, which could allow authenticated users to execute arbitrary code via a buffer overflow in a mdef command with a long macro name.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Florian Heinz · cremotelinux
https://www.exploit-db.com/exploits/22342

This exploit targets a buffer overflow vulnerability in Qpopper 4.0.4 and earlier via the 'mdef' command, allowing remote code execution. It uses a brute-force approach to determine the correct buffer size and return address for successful exploitation.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: Qpopper 4.0.4 and earlier
Auth required
Prerequisites: Valid POP3 credentials · Network access to the target POP3 service
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (8)

Core 8
Core References
Mailing List vendor-advisory x_refsource_gentoo
http://marc.info/?l=bugtraq&m=104792541215354&w=2
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/7058
Vendor Advisory vendor-advisory x_refsource_suse
http://www.novell.com/linux/security/advisories/2003_018_qpopper.html
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=104739841223916&w=2
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=104768137314397&w=2
Patch, Vendor Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2003/dsa-259
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/11516
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=104748775900481&w=2

Scores

EPSS 0.0860
EPSS Percentile 94.4%

Details

Status published
Products (4)
qualcomm/qpopper 4.0.1
qualcomm/qpopper 4.0.2
qualcomm/qpopper 4.0.3
qualcomm/qpopper 4.0.4
Published Mar 18, 2003
Tracked Since Feb 18, 2026