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TITLE:
BOINC "RSA_public_decrypt()" Spoofing Vulnerability

SECUNIA ADVISORY ID:
SA33806

VERIFY ADVISORY:
http://secunia.com/advisories/33806/

CRITICAL:
Less critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
BOINC 6.x
http://secunia.com/advisories/product/19421/

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

The vulnerability is caused due to the application incorrectly
verifying the return value of the "RSA_public_decrypt()"  function
when validating RSA key signatures and can potentially be exploited
to bypass the validation of a certificate chain.

The vulnerability is reported in version 6.4.5. Other versions may
also be affected.

SOLUTION:
Fixed in the source code repository.

PROVIDED AND/OR DISCOVERED BY:
Reported by Kurt Roeckx via a Debian bug report.

ORIGINAL ADVISORY:
BOINC:
http://boinc.berkeley.edu/trac/ticket/823

Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511521

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