CVE-2000-0263

Red Hat Linux 6.x - Denial of Service via Malformed X Font Server Request

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-0263.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service vulnerability in the X11 font server (xfs) by sending malformed input over a Unix domain socket. The code connects to the font server and writes a buffer filled with 'A' characters, causing the server to crash.

Description

The X font server xfs in Red Hat Linux 6.x allows an attacker to cause a denial of service via a malformed request.

Exploits (1)

exploitdb WORKING POC
cdoslinux
https://www.exploit-db.com/exploits/19850

This exploit demonstrates a denial-of-service vulnerability in the X11 font server (xfs) by sending malformed input over a Unix domain socket. The code connects to the font server and writes a buffer filled with 'A' characters, causing the server to crash.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: X11 font server (xfs) on RedHat Linux 6.x
No auth needed
Prerequisites: Access to the target system's Unix domain socket (/tmp/.font-unix/fs-1)
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1111
Vendor Advisory mailing-list x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2000-04/0079.html

Scores

EPSS 0.0048
EPSS Percentile 65.6%

Details

Status published
Products (3)
redhat/linux 6.0 (3 CPE variants)
redhat/linux 6.1 (3 CPE variants)
redhat/linux 6.2 (3 CPE variants)
Published Apr 16, 2000
Tracked Since Feb 18, 2026