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SpamAssassin 3, Vipul's Razor: Denial of Service vulnerability


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200506-17 / SpamAssassin, Vipul's Razor
Release Date June 21, 2005
Latest Revision May 22, 2006: 03
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
mail-filter/spamassassin < 3.0.4 >= 3.0.4, < 3.0.1 All supported architectures
mail-filter/razor < 2.74 >= 2.74 All supported architectures

Related bugreports: #94722, #95492, #96776


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

2.  Impact Information


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.


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


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

3.  Resolution Information


There is no known workaround at this time.


All SpamAssassin users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

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

Code Listing 3.2: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/razor-2.74"

4.  References


Page updated June 21, 2005

Summary: This is a Gentoo Linux Security Advisory

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