Ethereal contains a vulnerability in the way it processes Server Message Block (SMB) packets.
The Server Message Block (SMB) protocol is used for sharing files, printers, and other resources between computers. SMB is used in Microsoft Windows to provide file and print services. Ethereal includes the ability to decode packets containing SMB data. There is a vulnerability in the way the SMB dissector decodes SMB packets containing a policy name without a handle. If SID snooping is enabled, this could trigger a null pointer dereference and a remote, unauthenticated attacker could cause Ethereal to crash or potentially execute code of the attacker's choice.
A remote, unauthenticated attacker could cause Ethereal to crash or potentially execute code of the attacker's choice.
Upgrade to version 0.10.5 or later.
Note: Ethereal is considered BETA software at this time.
Disable SID Snooping
1) Select Edit --> Preferences
2) Expand the Protocols section
3) Select SMB
4) Disable the checkbox for "Snoop SID to Name mappings"
However, it is strongly encouraged to upgrade to version 0.10.5 or later.
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Updated: September 01, 2004
No statement is currently available from the vendor regarding this vulnerability.
The vendor has not provided us with any further information regarding this vulnerability.
Please refer to Ethereal Security Advisory enpa-sa-00015.
If you have feedback, comments, or additional information about this vulnerability, please send us email.
Group | Score | Vector
Base | N/A | N/A
Temporal | N/A | N/A
Environmental | | N/A
This vulnerability was reported by the maintainers of Ethereal.
This document was written by Damon Morda.
CVE IDs: | CVE-2004-0634
Severity Metric:** | 8.09
Date Public: | 2004-07-06
Date First Published: | 2004-09-07
Date Last Updated: | 2004-10-08 13:25 UTC
Document Revision: | 14