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TITLE:
OpenSSL "ssl3_get_key_exchange()" Use-After-Free Vulnerability

SECUNIA ADVISORY ID:
SA40906

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40906/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40906

RELEASE DATE:
2010-08-09

DISCUSS ADVISORY:
http://secunia.com/advisories/40906/#comments

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

http://secunia.com/advisories/40906/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=40906

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

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been discovered in OpenSSL, 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 a use-after-free error within the
"ssl3_get_key_exchange()" function in ssl/s3_clnt.c and can be
exploited by e.g. tricking a client into connecting to a malicious
server.

The vulnerability is confirmed in version 1.0.0a. Other versions may
also be affected.

SOLUTION:
Connect to trusted servers only.

PROVIDED AND/OR DISCOVERED BY:
Georgi Guninski

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/fulldisclosure/2010-08/0085.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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vulnerabilities.

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