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TITLE:
Dovecot CMU Sieve Plugin Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA36698

VERIFY ADVISORY:
http://secunia.com/advisories/36698/

DESCRIPTION:
Some vulnerabilities have been reported in the CMU Sieve plugin for
Dovecot, which can be exploited by malicious users to potentially
compromise a vulnerable system. 

1) An error in the handling of Sieve scripts can be exploited to
cause a stack-based buffer overflow.

This may be related to:
SA36629

2) Multiple unspecified boundary errors can be exploited to cause
buffer overflows via specially crafted Sieve scripts.

Successful exploitation of the vulnerabilities may allow execution of
arbitrary code.

The vulnerabilities are reported in versions prior to 1.0.4 and
1.1.7.

SOLUTION:
Update to version 1.0.4 or 1.1.7.

PROVIDED AND/OR DISCOVERED BY:
2) Reported by the vendor.

ORIGINAL ADVISORY:
http://www.dovecot.org/list/dovecot-news/2009-September/000135.html

OTHER REFERENCES:
SA36629:
http://secunia.com/advisories/36629/

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