Secunia Security Advisory - A vulnerability has been reported in OpenSSL, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.
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TITLE:
OpenSSL TLS Server Extension Parsing Race Condition Vulnerability
SECUNIA ADVISORY ID:
SA42243
VERIFY ADVISORY:
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http://secunia.com/advisories/42243/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42243
RELEASE DATE:
2010-11-16
DISCUSS ADVISORY:
http://secunia.com/advisories/42243/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Impact
* Where
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* CVE Reference(s)
http://secunia.com/advisories/42243/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42243
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DESCRIPTION:
A vulnerability has been reported 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 race condition within the TLS
extension parsing code, which can be exploited to cause a heap-based
buffer overflow.
Successful exploitation requires that the server is multi-threaded
and uses the internal caching mechanism of OpenSSL. Multi-processed
servers or servers with disabled internal caching session (e.g.
Apache HTTP server, Stunnel) are not affected.
The vulnerability is reported in versions 0.9.8f through 0.9.8o and
versions 1.0.0 and 1.0.0a.
SOLUTION:
Update to version 0.9.8p and 1.0.0b or apply patches.
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Rob Hulswit.
ORIGINAL ADVISORY:
http://www.openssl.org/news/secadv_20101116.txt
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
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EXTENDED SOLUTION:
Further details available in Customer Area:
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EXPLOIT:
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http://secunia.com/products/corporate/EVM/
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