(Gentoo Issues Fix) Cyrus IMAPd Buffer Overflows in Annotate Extension, Cached Header, and Fetchnews May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1013281 |
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SecurityTracker URL: http://securitytracker.com/id/1013281
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Feb 24 2005
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 2.2.11
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Description:
Some buffer overflow vulnerabilities were reported in Cyrus IMAPd. A remote authenticated user may be able to execute arbitrary code.
There are some single byte buffer overflows in the imap annotate extension functions and in the processing of cached headers. A remote authenticated user can invoke these functions to trigger the buffer overflow.
There is also a buffer overflow in the fetchnews function. A news administrator on a peer news system can trigger this buffer overflow.
Sean Larsson is credited with reporting these flaws.
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Impact:
A remote authenticated user may be able to execute arbitrary code on the target system with the privileges of the imap service.
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Solution:
Gentoo has released a fix and indicates that all Cyrus IMAP Server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/cyrus-imapd-2.2.12"
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Vendor URL: asg.web.cmu.edu/cyrus/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Gentoo)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Wed, 23 Feb 2005 18:35:21 +0100
Subject: [gentoo-announce] [ GLSA 200502-29 ] Cyrus IMAP Server: Multiple overflow vulnerabilities
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Gentoo Linux Security Advisory GLSA 200502-29
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http://security.gentoo.org/
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Severity: Normal
Title: Cyrus IMAP Server: Multiple overflow vulnerabilities
Date: February 23, 2005
Bugs: #82404
ID: 200502-29
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Synopsis
========
The Cyrus IMAP Server is affected by several overflow vulnerabilities
which could potentially lead to the remote execution of arbitrary
code.
Background
==========
The Cyrus IMAP Server is an efficient, highly-scalable IMAP e-mail
server.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-mail/cyrus-imapd < 2.2.12 >= 2.2.12
Description
===========
Possible single byte overflows have been found in the imapd annotate
extension and mailbox handling code. Furthermore stack buffer overflows
have been found in fetchnews, the backend and imapd.
Impact
======
An attacker, who could be an authenticated user or an admin of a
peering news server, could exploit these vulnerabilities to execute
arbitrary code with the rights of the user running the Cyrus IMAP
Server.
Workaround
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There is no known workaround at this time.
Resolution
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All Cyrus IMAP Server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/cyrus-imapd-2.2.12"
References
==========
[ 1 ] Cyrus IMAP Announcement
http://asg.web.cmu.edu/archive/message.php?mailbox=archive.info-cyrus&msg=33723
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200502-29.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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