Linux Kernel Denial of Service Vulnerabilities - Secunia Advisories - Vulnerability Information

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Linux Kernel Denial of Service Vulnerabilities

Secunia Advisory:

SA8936

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Release Date:

2003-06-03

Popularity:

14,009 views

Critical:

Moderately critical

Impact:

DoS

Where:

From remote

Solution Status:

Vendor Patch

OS:

Conectiva Linux 7.0
Conectiva Linux 8
Conectiva Linux 9
Debian GNU/Linux 3.0
EnGarde Secure Community 1.x
EnGarde Secure Community 2.x
EnGarde Secure Professional 1.x
Gentoo Linux
Linux Kernel 2.4.x
Mandrake Corporate Server 2.x
Mandrake Linux 8.x
Mandrake Linux 9.x
Mandrake Multi Network Firewall 8.x
OpenLinux Server 3.x
OpenLinux Workstation 3.x
Red Hat Enterprise Linux AS 2.1
Red Hat Enterprise Linux ES 2.1
Red Hat Enterprise Linux WS 2.1
Red Hat Linux 7.1
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0
Red Hat Linux 9
Red Hat Linux Advanced Server 2.1 for Itanium
Red Hat Linux Advanced Workstation 2.1 for Itanium
Slackware Linux 8.x
Slackware Linux 9.0
SuSE eMail Server 3.x
SuSE Linux 7.x
SuSE Linux 8.x
SuSE Linux Connectivity Server
SuSE Linux Database Server
SuSE Linux Enterprise Server 7
SuSE Linux Enterprise Server 8
SuSE Linux Firewall on CD/Admin host
SuSE Linux Office Server

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Advisory Content (Page 1 of 3)

[ 1 ] [ 2 ] [ 3 ]

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Description:
Three vulnerabilities have been identified in the Linux Kernel 2.4 branch. One can be exploited to cause a Denial of Service by a malicious person and is very similar to the recent Linux Kernel Denial of Service. The others are local Denial of Service vulnerabilities.

The remote Denial of Service is possible, because malicious people can cause hash table collisions by sending a stream of maliciously crafted fragmented TCP packets. This will cause the system to consume large amounts of CPU resources.

For more information about hash table collisions see:
http://secunia.com/advisories/8786/

It is possible to cause a kernel oops, because of an unspecified vulnerability in the tty layer. This could possibly reveal sensitive information to local users or cause a Denial of Service.

A malformed address may cause low level mxcsr code to leave garbage in CPU state registers. This could possibly lead to a Denial of Service.

Change Page:
[ 1 ] [ 2 ] [ 3 ]

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