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Gentoo Linux Security Advisory 200505-20

Gentoo Linux Security Advisory 200505-20
Posted Jul 2, 2005
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200505-20 - infamous41d discovered several vulnerabilities in GNU Mailutils. imap4d does not correctly implement formatted printing of command tags (CVE-2005-1523), fails to validate the range sequence of the FETCH command (CVE-2005-1522), and contains an integer overflow in the fetch_io routine (CVE-2005-1521). mail contains a buffer overflow in header_get_field_name() (CVE-2005-1520). Versions less than 0.6-r1 are affected.

tags | advisory, overflow, vulnerability
systems | linux, gentoo
advisories | CVE-2005-1520, CVE-2005-1521, CVE-2005-1522, CVE-2005-1523
SHA-256 | c2fb67e7ef5e9d7869519665523ab1b56b6a1f13618b8118efd53ef25ee92044

Gentoo Linux Security Advisory 200505-20

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Gentoo Linux Security Advisory GLSA 200505-20
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http://security.gentoo.org/
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Severity: High
Title: Mailutils: Multiple vulnerabilities in imap4d and mail
Date: May 27, 2005
Bugs: #94053
ID: 200505-20

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Synopsis
========

The imap4d server and the mail utility from GNU Mailutils contain
multiple vulnerabilities, potentially allowing a remote attacker to
execute arbitrary code with root privileges.

Background
==========

GNU Mailutils is a collection of mail-related utilities, including an
IMAP4 server (imap4d) and a Mail User Agent (mail).

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-mail/mailutils < 0.6-r1 >= 0.6-r1

Description
===========

infamous41d discovered several vulnerabilities in GNU Mailutils. imap4d
does not correctly implement formatted printing of command tags
(CAN-2005-1523), fails to validate the range sequence of the "FETCH"
command (CAN-2005-1522), and contains an integer overflow in the
"fetch_io" routine (CAN-2005-1521). mail contains a buffer overflow in
"header_get_field_name()" (CAN-2005-1520).

Impact
======

A remote attacker can exploit the format string and integer overflow in
imap4d to execute arbitrary code as the imap4d user, which is usually
root. By sending a specially crafted email message, a remote attacker
could exploit the buffer overflow in the "mail" utility to execute
arbitrary code with the rights of the user running mail. Finally, a
remote attacker can also trigger a Denial of Service by sending a
malicious FETCH command to an affected imap4d, causing excessive
resource consumption.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All GNU Mailutils users should upgrade to the latest available version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/mailutils-0.6-r1"

References
==========

[ 1 ] CAN-2005-1520
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1520
[ 2 ] CAN-2005-1521
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1521
[ 3 ] CAN-2005-1522
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1522
[ 4 ] CAN-2005-1523
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1523
[ 5 ] iDEFENSE 05.25.05 advisories

http://www.idefense.com/application/poi/display?type=vulnerabilities&showYear=2005

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200505-20.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0

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