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TITLE:
GnuTLS "gnutls_session_get_data()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA46770

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46770/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46770

RELEASE DATE:
2011-11-10

DISCUSS ADVISORY:
http://secunia.com/advisories/46770/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/46770/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=46770

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A vulnerability has been discovered in GnuTLS, which can be exploited
by malicious people to cause a DoS (Denial of Service) and potentially
compromise an application using the library.

The vulnerability is caused due to an error within the
"gnutls_session_get_data()" function (lib/gnutls_session.c) and can
be exploited to cause a buffer overflow by tricking a client using
the function into connecting to a malicious server.

Note: Successful exploitation requires that the client calls the
"gnutls_session_get_data()" function with an undersized buffer.

SOLUTION:
Update to version 2.12.4 or 3.0.7.

PROVIDED AND/OR DISCOVERED BY:
Alban Crequy

ORIGINAL ADVISORY:
Alban Crequy:
http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/5596

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
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