Cyrus IMAPd buffer overflow vulnerability

Overview

The Cyrus IMAP server contains a vulnerability that may allow an authenticated attacker to execute code.

Description

The Cyrus IMAP mail server supports the SIEVE mail filtering language. Cyrus IMAP versions 2.2 through 2.3.14 contain a buffer overflow vulnerability that may be triggered by a specially crafted SIEVE script. To install this type of script, the attacker would need to have direct access to a mail account on the server.

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Impact

An attacker with the ability to install SIEVE scripts may be able to gain elevated privileges and use the new permissions to execute code, read other user’s mail, or send spoofed email messages.

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Solution

Update

The Cyrus IMAP team has released an update to address this issue. See <http://lists.andrew.cmu.edu/pipermail/cyrus-announce/2009-September/000068.html&gt; for more information.

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Disable SIEVE

Administrators who compile Cyrus IMAP from source can use the --disable-sieve option to mitigate this issue.

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Vendor Information

336053

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Debian GNU/Linux __ Affected

Notified: September 04, 2009 Updated: September 10, 2009

Statement Date: September 09, 2009

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

<http://www.us.debian.org/security/2009/dsa-1881&gt;

Vendor References

• <http://www.us.debian.org/security/2009/dsa-1881&gt;

SUSE Linux __ Affected

Notified: September 04, 2009 Updated: September 10, 2009

Statement Date: September 10, 2009

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

All SUSE Linux products are affected by this issue. Fixed packages will be available soon and can be installed via YaST.

The SCO Group Affected

Notified: September 04, 2009 Updated: September 08, 2009

Statement Date: September 08, 2009

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Slackware Linux Inc. Not Affected

Notified: September 04, 2009 Updated: September 11, 2009

Statement Date: September 09, 2009

Status

Not Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Sun Microsystems, Inc. Not Affected

Notified: September 04, 2009 Updated: September 10, 2009

Statement Date: September 10, 2009

Status

Not Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Apple Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Conectiva Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Cray Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

DragonFly BSD Project Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

EMC Corporation Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Engarde Secure Linux Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

F5 Networks, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fedora Project Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

FreeBSD, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fujitsu Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Gentoo Linux Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hewlett-Packard Company Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hitachi Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM eServer Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Infoblox Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Juniper Networks, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Mandriva S. A. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Microsoft Corporation Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

MontaVista Software, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NEC Corporation Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NetBSD Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Nokia Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Novell, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

OpenBSD Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Openwall GNU/*/Linux __ Unknown

Notified: September 04, 2009 Updated: September 10, 2009

Statement Date: September 10, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

Openwall GNU/*/Linux is not affected. We do not ship Cyrus IMAPd.

QNX Software Systems Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Red Hat, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

SafeNet Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Silicon Graphics, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sony Corporation Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Turbolinux Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Ubuntu Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Unisys Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Wind River Systems, Inc. Unknown

Notified: September 04, 2009 Updated: September 05, 2009

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

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CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://lists.andrew.cmu.edu/pipermail/cyrus-announce/2009-September/000068.html&gt;
• <http://cyrusimap.web.cmu.edu/imapd/install-compile.html&gt;
• <http://en.wikipedia.org/wiki/Sieve_(mail_filtering_language)&gt;

Acknowledgements

Thanks to the Cyrus IMAP development team and Bron Gondwana for information that was used in this report.

This document was written by Ryan Giobbi.

Other Information

CVE IDs:	CVE-2009-2632
Severity Metric:	0.56 Date Public: