Vulnerability CVE-2015-2141


Published: 2015-07-01

Description:
The InvertibleRWFunction::CalculateInverse function in rw.cpp in libcrypt++ 5.6.2 does not properly blind private key operations for the Rabin-Williams digital signature algorithm, which allows remote attackers to obtain private keys via a timing attack.

Type:

CWE-200

(Information Exposure)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Opensuse -> Opensuse 
Novell -> Opensuse 
Cryptopp -> Crypto++ library 

 References:
http://lists.opensuse.org/opensuse-updates/2015-07/msg00047.html
http://sourceforge.net/p/cryptopp/code/542/
http://www.debian.org/security/2015/dsa-3296
http://www.securityfocus.com/bid/75467
https://github.com/weidai11/cryptopp/commit/9425e16437439e68c7d96abef922167d68fafaff

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