Vulnerability Note VU#361700

Ethereal contains integer overflow in PPP dissector

Overview

Ethereal is a network traffic analysis package. The PPP packet dissector contains a vulnerability that may result in the execution of arbitrary code.

I. Description

The PPP packet dissector for Ethereal contains an integer overflow vulnerability. According to the Ethereal Advisory, tvb_get_nstringz() and tvb_get_nstringz0() were used in an unsafe manner.

Versions 0.9.11 and earlier of Ethereal are affected.

II. Impact

It may be possible for a remote attacker to crash the program or run arbitrary code on the system via a crafted packet.

III. Solution

Upgrade to version 0.9.12 which resolves this issue.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Ethereal	Vulnerable	12-May-2003

References

http://www.ethereal.com/appnotes/enpa-sa-00009.html

Credit

Thanks to Timo Sirainen for reporting this vulnerability.

This document was written by Jason A Rafail and is based upon information in the Ethereal Advisory.

Other Information

Date Public:	2003-05-01
Date First Published:	2003-05-12
Date Last Updated:	2003-05-12
CERT Advisory:
CVE-ID(s):
NVD-ID(s):
US-CERT Technical Alerts:
Metric:	6.95
Document Revision:	4

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