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SpamAssassin: Long URI Denial of Service


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


SpamAssassin is vulnerable to a Denial of Service attack.

2.  Impact Information


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


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


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


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-3.1.8"

4.  References


Page updated March 02, 2007

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