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>> OpenSSL Montgomery Multiplication Side-Channel Local Information Disclosure
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Title : OpenSSL Montgomery Multiplication Side-Channel Local Information Disclosure
VUPEN ID : VUPEN/ADV-2007-2759
CVE ID : CVE-2007-3108
Rated as : Moderate Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2007-08-02
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A vulnerability has been identified in OpenSSL, which could be exploited by local attackers to gain knowledge of sensitive information. This issue is caused by an error in the "BN_from_montgomery()" [openssl/crypto/bn/bn_mont.c] function, which could allow a malicious user to retrieve encryption keys and potentially decrypt messages that were encrypted using a vulnerable application.
Affected Products
OpenSSL version 0.9.8e and prior
Solution
Apply patch :
http://openssl.org/news/patch-CVE-2007-3108.txt
References
http://www.vupen.com/english/advisories/2007/2759
http://www.kb.cert.org/vuls/id/724968
Credits
Vulnerability reported by Onur Aciicmez (Samsung Information Systems) and Werner Schindler (BSI).
ChangeLog
2007-08-02 : Initial release
Vulnerability Management
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