Vulnerability Note VU#108964

Sendmail contains buffer overflow in ruleset parsing

Overview

Sendmail contains a buffer overflow vulnerability in the code that parses rulesets. This vulnerability could allow a remote attacker to execute arbitrary code or cause a denial of service on a vulnerable system.This vulnerability does not affect the default configuration.

I. Description

Sendmail is a widely used mail transfer agent (MTA). There is a buffer overflow vulnerability in the code that parses rulesets. A system is vulnerable if it is configured to use the non-standard rulesets recipient (2), final (4), or mailer-specific envelope recipients.

This is a different vulnerability than the one described in CA-2003-25/VU#784980.

II. Impact

Exploitation of this vulnerability could allow a remote attacker to execute arbitrary code or cause a denial of service on a vulnerable system.

III. Solution

This issue is resolved in Sendmail 8.12.10.Beta2.

Download the commercial version from:

http://www.sendmail.com/

or the open-source version from:

http://www.sendmail.org/

Systems Affected

Vendor	Status	Date Updated
Sendmail	Vulnerable	18-Sep-2003
Sendmail Inc.	Vulnerable	18-Sep-2003

References

http://www.sendmail.com
http://www.sendmail.org

Credit

Thanks to Timo Sirainen for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

Date Public	07/01/2003
Date First Published	09/18/2003 02:09:42 PM
Date Last Updated	09/18/2003
CERT Advisory
CVE Name
US-CERT Technical Alerts
Metric	6.33
Document Revision	7

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