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Wireshark SSCOP dissector fails to properly handle malformed packets

Vulnerability Note VU#696896

Original Release Date: 2006-10-25 | Last Revised: 2006-10-25


Wireshark contains a vulnerability in the SSCOP dissector that may cause a denial of service condition.


Wireshark contains a vulnerability in the Service-Specific Connection Oriented Protocol (SSCOP) dissector.

Wireshark states that:
If the SSCOP dissector has a port range configured and the SSCOP payload protocol is Q.2931, a malformed packet could make the Q.2931 dissector use up available memory. No port range is configured by default.
Wireshark states that Wireshark versions 0.7.9 - 0.99.2 are vulnerable.

Note: Ethereal has changed its name to Wireshark.


By sending a malformed packet, a remote attacker may be able to cause the Q2931 dissector to exceed the available memory and cause a denial of service condition.


Wireshark has released an updated product version (Wireshark 0.99.3)


Wireshark provides a workaround in security document wnpa-sec-2006-02.

Vendor Information

Affected   Unknown   Unaffected


Updated:  October 24, 2006



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Please see Wireshark security document wnpa-sec-2006-02 for further information.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A



This vulnerability was reported in Wireshark document wnpa-sec-2006-02.

This document was written by Katie Steiner.

Other Information

CVE IDs: CVE-2006-4333
Severity Metric: 0.56
Date Public: 2006-08-25
Date First Published: 2006-10-25
Date Last Updated: 2006-10-25 18:03 UTC
Document Revision: 16

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