Bug 10877 – RedHat 6.x X Font Server DoS Vulnerability

Bug 10877 - RedHat 6.x X Font Server DoS Vulnerability

Summary:	RedHat 6.x X Font Server DoS Vulnerability

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	XFree86 (Show other bugs)
Sub Component:
Version:	6.2
Hardware:	All Linux

Priority	high Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Mike A. Harris
QA Contact:
Docs Contact:

URL:	http://www.securityfocus.com/vdb/bott...
Whiteboard:
Keywords:	Security

Duplicates:	10897 10951 (view as bug list)
Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2000-04-17 14:38 EDT by Matthew Miller
Modified:	2008-05-01 11:37 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2001-04-24 12:27:36 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Matthew Miller 2000-04-17 14:38:15 EDT

See: http://www.securityfocus.com/vdb/bottom.html?vid=1111

From the discussion there:

A denial of service exists in the X11 font server shipped with RedHat Linux
6.x. Due to improper input validation, it is possible for any user to crash
the X fontserver. This will prevent the X server from functioning properly.

(There is also an exploit:
http://www.securityfocus.com/data/vulnerabilities/exploits/kill-xfs.c )

Comment 1 Bill Nottingham 2000-04-18 15:27:59 EDT

*** Bug 10897 has been marked as a duplicate of this bug. ***

Comment 2 Matthew Miller 2000-05-24 13:39:59 EDT

Any word on this? Not only would it be nice to have these things fixed, it looks
bad for Linux in general when it takes a long time. (See, for instance
http://www.securityfocus.com/frames/?content=/vdb/stats.html)

(I'm sorry that I don't have the programming skills myself to give you a patch.)

Comment 3 Bernhard Rosenkraenzer 2000-12-20 07:50:47 EST

*** Bug 10951 has been marked as a duplicate of this bug. ***

Comment 4 Mike A. Harris 2001-05-25 10:45:54 EDT

Fixed in our currently pending errata soon to be released.

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