CVE-2003-0501

Linux Kernel - Information Disclosure via /proc Filesystem

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2003-0501. PoCs published by IhaQueR.

AI-analyzed exploit summary This PoC demonstrates an information disclosure vulnerability in the Linux /proc filesystem by reading the environment variables of a setuid process. It forks a child process that reads the parent's /proc/[pid]/environ file while the parent executes a setuid binary (ping).

Description

The /proc filesystem in Linux allows local users to obtain sensitive information by opening various entries in /proc/self before executing a setuid program, which causes the program to fail to change the ownership and permissions of those entries.

Exploits (1)

exploitdb WORKING POC VERIFIED
by IhaQueR · clocallinux
https://www.exploit-db.com/exploits/22813

This PoC demonstrates an information disclosure vulnerability in the Linux /proc filesystem by reading the environment variables of a setuid process. It forks a child process that reads the parent's /proc/[pid]/environ file while the parent executes a setuid binary (ping).

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Linux kernel (versions affected by CVE-2003-0501)
No auth needed
Prerequisites: Access to a Linux system with the vulnerability · Ability to execute setuid binaries
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2003-238.html
Patch, Vendor Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2004/dsa-423
Patch, Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2003-198.html
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2003-239.html
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A328
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=105621758104242
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2004/dsa-358

Scores

EPSS 0.0083
EPSS Percentile 52.7%

Details

Status published
Products (1)
linux/linux_kernel 2.6.20.1
Published Aug 07, 2003
Tracked Since Feb 18, 2026