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SpamAssassin: Long URI Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200703-02 / spamassassin
Release Date March 02, 2007
Latest Revision March 02, 2007: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
mail-filter/spamassassin < 3.1.8 >= 3.1.8 All supported architectures

Related bugreports: #166969

Synopsis

SpamAssassin is vulnerable to a Denial of Service attack.

2.  Impact Information

Background

SpamAssassin is an extensible email filter used to identify junk email.

Description

SpamAssassin does not correctly handle very long URIs when scanning emails.

Impact

An attacker could cause SpamAssassin to consume large amounts of CPU and memory resources by sending one or more emails containing very long URIs.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All SpamAssassin users should upgrade to the latest version.

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/spamassassin-3.1.8"

4.  References



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Page updated March 02, 2007

Summary: This is a Gentoo Linux Security Advisory

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