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Gentoo Linux Security Advisory GLSA 200506-17

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                                        http://security.gentoo.org/

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Severity: Normal
Title: SpamAssassin 3, Vipul's Razor: Denial of Service
vulnerability
Date: June 21, 2005
Bugs: #94722, #95492
ID: 200506-17

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Synopsis

SpamAssassin and Vipul's Razor are vulnerable to a Denial of Service
attack when handling certain malformed messages.

Background

SpamAssassin is an extensible email filter which is used to identify
junk email. Vipul's Razor is a client for a distributed, collaborative
spam detection and filtering network.

Affected packages

-------------------------------------------------------------------
 Package                   /  Vulnerable  /             Unaffected
-------------------------------------------------------------------

1 mail-filter/spamassassin < 3.0.4 >= 3.0.4
< 3.0.1
2 mail-filter/razor < 2.71 >= 2.71
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------

Description

SpamAssassin and Vipul's Razor contain a Denial of Service
vulnerability when handling special misformatted long message headers.

Impact

By sending a specially crafted message an attacker could cause a Denial
of Service attack against the SpamAssassin/Vipul's Razor server.

Workaround

There is no known workaround at this time.

Resolution

All SpamAssassin users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/spamassassin-3.0.4"

All Vipul's Razor users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/razor-2.71"

References

[ 1 ] CAN-2005-1266
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1266
[ 2 ] SpamAssassin Announcement

http://mail-archives.apache.org/mod_mbox/spamassassin-announce/200506.mbox/&#37;[email protected]&#37;3e
[ 3 ] Vipul's Razor Announcement
http://sourceforge.net/mailarchive/forum.php?thread_id=7520323&forum_id=4259

Availability

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

http://security.gentoo.org/glsa/glsa-200506-17.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
[email protected] 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