ISS Security Brief: Email Processing Vulnerability in Sendmail

From: X-Force (
Date: 03/30/03

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    From: X-Force <>
    Date: Sat, 29 Mar 2003 19:01:40 -0500 (EST)


    Internet Security Systems Security Brief
    March 29, 2003

    Email Processing Vulnerability in Sendmail


    ISS X-Force is researching a public report of an email header processing buffer
    overflow vulnerability in Sendmail. This report was made public on March 29,
    2003. Unpatched versions of Sendmail are vulnerable to a flaw in the header
    processing routine that validates addresses inside email messages. The buffer
    overflow condition can be triggered if a specially crafted long email address
    is supplied within an email message.


    X-Force is actively researching the vulnerability to determine the exact nature
    and scope of the issue. The initial vulnerability report indicates that local
    exploitation is possible, and remote compromise is suspected. X-Force has
    determined that significant barriers to reliable remote compromise exist.

    Please refer to the complete X-Force Alert for the latest information.

    Affected Versions:

    Sendmail Pro (all versions)
    Sendmail Switch 2.1 prior to 2.1.6
    Sendmail Switch 2.2 prior to 2.2.6
    Sendmail Switch 3.0 prior to 3.0.4
    Sendmail for NT 2.X prior to 2.6.3
    Sendmail for NT 3.0 prior to 3.0.4
    Open-source Sendmail versions prior to 8.12.9

    For the complete ISS X-Force Security Alert, please visit:

    About Internet Security Systems (ISS)
    Founded in 1994, Internet Security Systems (ISS) (Nasdaq: ISSX) is a
    pioneer and world leader in software and services that protect critical
    online resources from an ever-changing spectrum of threats and misuse.
    Internet Security Systems is headquartered in Atlanta, GA, with
    additional operations throughout the Americas, Asia, Australia, Europe
    and the Middle East.

    Copyright (c) 2003 Internet Security Systems, Inc. All rights reserved

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