Ethereal WCP Dissector Buffer Overflow Vulnerability

BID:5164

Info

Ethereal WCP Dissector Buffer Overflow Vulnerability

Bugtraq ID: 5164
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: No
Published: Jun 28 2002 12:00AM
Updated: Jun 28 2002 12:00AM
Credit: Published in Ethereal advisory enpa-sa-00005.
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
 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 0.9.5

Discussion

Ethereal WCP Dissector Buffer Overflow Vulnerability

The WCP (Wellfleet Compression Protocol) dissector is prone to a buffer overflow condition when handling large frames. This is due to insufficient bounds checking of framesizes. It is possible to construct a packet that will, when decoded by Ethereal, trigger the overflow condition.

Exploit / POC

Ethereal WCP Dissector Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

Ethereal WCP Dissector Buffer Overflow Vulnerability

Solution:
FreeBSD has released an updated version of ports which contains version 0.9.6 of Ethereal. The new version of ports may be downloaded from a ports mirror, and the fixed version of Ethereal installed from source. See referenced advisory for more information.

This issue has been addressed in Ethereal 0.9.5. 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

Ethereal Group Ethereal 0.9.4

References

Ethereal WCP Dissector Buffer Overflow Vulnerability

References:

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