CVE-2000-0338

MEDIUM

Concurrent Versions Software - Denial of Service via Predictable Lock File

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-0338. PoCs published by Michal Szymanski.

AI-analyzed exploit summary This Perl script exploits CVE-2000-0338 by pre-creating directories in /tmp with predictable names (cvs-serv followed by a PID) to deny service to CVS users. The attack leverages the world-writable nature of /tmp and CVS's predictable temporary directory naming scheme.

Description

Concurrent Versions Software (CVS) uses predictable temporary file names for locking, which allows local users to cause a denial of service by creating the lock directory before it is created for use by a legitimate CVS user.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Michal Szymanski · perldoslinux
https://www.exploit-db.com/exploits/19870

This Perl script exploits CVE-2000-0338 by pre-creating directories in /tmp with predictable names (cvs-serv followed by a PID) to deny service to CVS users. The attack leverages the world-writable nature of /tmp and CVS's predictable temporary directory naming scheme.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: CVS (Concurrent Versions System)
No auth needed
Prerequisites: Access to the target system's /tmp directory · Ability to create directories in /tmp
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/frames/?content=/templates/archive.pike%3Flist%3D1%26msg%3D20000423174038.A520%40clico.pl
Broken Link, Exploit, Patch, Third Party Advisory, VDB Entry, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1136

Scores

CVSS v3 5.5
EPSS 0.0137
EPSS Percentile 68.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-667
Status published
Products (1)
concurrent_versions_software_project/concurrent_versions_software
Published Apr 23, 2000
Tracked Since Feb 18, 2026