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SpamAssassin: Execution of arbitrary code


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200606-09 / Spamassassin
Release Date June 11, 2006
Latest Revision June 11, 2006: 01
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
mail-filter/spamassassin < 3.1.3 >= 3.1.3 All supported architectures

Related bugreports: #135746


SpamAssassin, when running with certain options, could allow local or even remote attackers to execute arbitrary commands, possibly as the root user.

2.  Impact Information


SpamAssassin is an extensible email filter used to identify junk email. spamd is the daemonized version of SpamAssassin.


When spamd is run with both the "--vpopmail" (-v) and "--paranoid" (-P) options, it is vulnerable to an unspecified issue.


With certain configuration options, a local or even remote attacker could execute arbitrary code with the rights of the user running spamd, which is root by default, by sending a crafted message to the spamd daemon. Furthermore, the attack can be remotely performed if the "--allowed-ips" (-A) option is present and specifies non-local adresses. Note that Gentoo Linux is not vulnerable in the default configuration.

3.  Resolution Information


Don't use both the "--paranoid" (-P) and the "--vpopmail" (-v) options.


All SpamAssassin users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-filter/spamassassin-3.1.3"

4.  References


Page updated June 11, 2006

Summary: This is a Gentoo Linux Security Advisory

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