Ethereal DNS Dissector Infinite Loop Denial of Service Vulnerability

BID:4807

Info

Ethereal DNS Dissector Infinite Loop Denial of Service Vulnerability

Bugtraq ID: 4807
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: No
Published: May 23 2002 12:00AM
Updated: May 23 2002 12:00AM
Credit: This issue was announced in the Ethereal application notes.
Vulnerable: Ethereal Group Ethereal 0.9.3
+ Redhat Linux 7.3 i386
 + Redhat Linux 7.3
+ Redhat Linux 7.2 i386
 + Redhat Linux 7.2 alpha
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 sparc
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 Ethereal Group Ethereal 0.9.2
Ethereal Group Ethereal 0.9.1
- Compaq Tru64 5.0
- Debian Linux 2.2 sparc
 - Debian Linux 2.2 powerpc
 - Debian Linux 2.2 IA-32
 - Debian Linux 2.2 arm
 - Debian Linux 2.2 alpha
 - Debian Linux 2.2 68k
 - HP HP-UX 11.0
- IBM AIX 5.1
 - Linux kernel 2.4
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows ME
- Microsoft Windows NT Workstation 4.0
 - NetBSD NetBSD 1.5
- OpenBSD OpenSSH 3.0
- SCO Unixware 7.0
- SGI IRIX 6.0
- Sun Solaris 8_sparc
 Ethereal Group Ethereal 0.9
Ethereal Group Ethereal 0.8.18
- Redhat Linux 7.2 ia64
 - Redhat Linux 7.2 i386
 - Redhat Linux 7.2
Not Vulnerable: Ethereal Group Ethereal 0.9.4
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha

Discussion

Ethereal DNS Dissector Infinite Loop Denial of Service Vulnerability

Ethereal is a freely available, open source network traffic analysis tool. It is maintained by the Ethereal Project and is available for most Unix and Linux variants as well as Microsoft Windows operating systems.

A condition exists where the DNS dissector routine may enter an infinite loop while processing a request. This may be triggered by a maliciously constructed DNS query transmitted across the network. A remote attacker may exploit this vulnerability to prevent Ethereal from functioning.

Solution / Fix

Ethereal DNS Dissector Infinite Loop Denial of Service Vulnerability

Solution:
This issue has been addressed in Ethereal 0.9.4. Those affected by this vulnerability are advised to upgrade.


Ethereal Group Ethereal 0.8.18

Ethereal Group Ethereal 0.9

Ethereal Group Ethereal 0.9.1

Ethereal Group Ethereal 0.9.2

Ethereal Group Ethereal 0.9.3

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