Two vulnerabilities have been reported in OpenSSL, where one has unknown impacts and the other can be exploited by malicious people to manipulate certain data.
1) A vulnerability is caused due to an error in the TLS protocol while handling session re-negotiations. This can be exploited to insert arbitrary plaintext before data sent by a legitimate client in an existing TLS session via Man-in-the-Middle (MitM) attacks.
Successful exploitation may allow e.g. sending an arbitrary HTTP request under an authenticated context if certificate-based authentication is used by the server.
2) A vulnerability is caused due to the library not properly verifying the return value of the "bn_wexpand()" function.
Solution: Update to version 0.9.8m.
Provided and/or discovered by: 1) Independently discovered by Marsh Ray, PhoneFactor and Martin Rex.
2) Martin Olsson and Neel Mehta
Original Advisory: OpenSSL:
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Subject: OpenSSL Two Vulnerabilities
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