Description
crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts.
References (8)
Core 8
Core References
Various Sources x_refsource_misc
http://crypto.di.uminho.pt/CACE/CT-RSA2012-openssl-src.zip
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=757909
Mailing List mailing-list
x_refsource_mlist
http://openwall.com/lists/oss-security/2011/12/01/6
Various Sources x_refsource_misc
http://eprint.iacr.org/2011/633
Vendor Advisory x_refsource_confirm
http://rt.openssl.org/Ticket/Display.html?id=1593&user=guest&pass=guest
Vendor Advisory x_refsource_confirm
http://cvs.openssl.org/filediff?f=openssl/crypto/bn/bn_nist.c&v1=1.14&v2=1.21
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2012/dsa-2390
Mailing List x_refsource_confirm
http://marc.info/?t=119271238800004
Scores
EPSS
0.0021
EPSS Percentile
42.8%
Details
CWE
CWE-310
Status
published
Products (34)
openssl/openssl
0.9.1c
openssl/openssl
0.9.2b
openssl/openssl
0.9.3
openssl/openssl
0.9.3a
openssl/openssl
0.9.4
openssl/openssl
0.9.5 (3 CPE variants)
openssl/openssl
0.9.5a (3 CPE variants)
openssl/openssl
0.9.6 (4 CPE variants)
openssl/openssl
0.9.6a (4 CPE variants)
openssl/openssl
0.9.6b
... and 24 more
Published
Jan 27, 2012
Tracked Since
Feb 18, 2026