SpamAssassin: Long URI Denial of Service

1. Gentoo Linux Security Advisory

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

Summary: This is a Gentoo Linux Security Advisory

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