CVE-2001-0955

critical

Description

Buffer overflow in fbglyph.c in XFree86 before 4.2.0, related to glyph clipping for large origins, allows attackers to cause a denial of service and possibly gain privileges via a large number of characters, possibly through the web page search form of KDE Konqueror or from an xterm command with a long title.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/7683

https://exchange.xforce.ibmcloud.com/vulnerabilities/7673

http://www.xfree86.org/security/

http://www.xfree86.org/4.2.0/RELNOTES2.html#2

http://www.securityfocus.com/bid/3663

http://www.securityfocus.com/bid/3657

http://marc.info/?l=vuln-dev&m=100118958310463&w=2

http://marc.info/?l=bugtraq&m=100784290015880&w=2

http://marc.info/?l=bugtraq&m=100776624224549&w=2

http://cvsweb.xfree86.org/cvsweb/xc/programs/Xserver/fb/fbglyph.c

Details

Source: Mitre, NVD

Published: 2001-09-22

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.0008