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TITLE:
Evolution S/MIME Signed Message Integrity Vulnerability

SECUNIA ADVISORY ID:
SA33848

VERIFY ADVISORY:
http://secunia.com/advisories/33848/

CRITICAL:
Moderately critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
GNOME Evolution 2.x
http://secunia.com/advisories/product/5525/
Novell Evolution 2.x
http://secunia.com/advisories/product/4558/

DESCRIPTION:
A vulnerability has been reported in Evolution, which can be
exploited by malicious people to conduct spoofing attacks.

The vulnerability is caused due to the application considering an
altered message signed by the S/MIME signature of an original message
valid. This can be exploited to send an apparently valid S/MIME
message with a signature obtained via e.g. a MitM (Man-in-the-Middle)
attack.

SOLUTION:
Do not rely on the security provided by S/MIME signatures in
Evolution.

PROVIDED AND/OR DISCOVERED BY:
Reported by Joachim Breitner in a Debian bug report.

ORIGINAL ADVISORY:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=508479

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