CVE-2011-4919

HIGH

mpack 1.6 - Unauthorized Information Exposure via Mail Eavesdropping

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-4919. PoCs published by hartwork.

AI-analyzed exploit summary This PoC monitors temporary directories for files created by the mpack tool and copies their contents to a specified output directory. It uses inotify to detect file creation events and a separate thread to process and rip the files.

Description

mpack 1.6 has information disclosure via eavesdropping on mails sent by other users

Exploits (1)

nomisec WORKING POC 1 stars
by hartwork · poc
https://github.com/hartwork/mpacktrafficripper

This PoC monitors temporary directories for files created by the mpack tool and copies their contents to a specified output directory. It uses inotify to detect file creation events and a separate thread to process and rip the files.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: mpack (unspecified version)
No auth needed
Prerequisites: Access to the system where mpack is being used · Permission to monitor /tmp or /var/tmp directories
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory x_refsource_misc
https://security-tracker.debian.org/tracker/CVE-2011-4919
Exploit, Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2011/12/31/1

Scores

CVSS v3 7.5
EPSS 0.0224
EPSS Percentile 80.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (1)
mpack_project/mpack 1.6
Published Nov 19, 2019
Tracked Since Feb 18, 2026