6.8 Medium
AI Score
Confidence
Low
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.006 Low
EPSS
Percentile
78.7%
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.
CPE | Name | Operator | Version |
---|---|---|---|
openssl | eq | 0.9.6a beta1 | |
openssl | eq | 0.9.7 beta5 | |
openssl | eq | 0.9.5 | |
openssl | eq | 0.9.898 | |
openssl | eq | 0.9.8 | |
openssl | eq | 0.9.8100 | |
openssl | eq | 0.9.6108 | |
openssl | eq | 0.9.7 beta4 | |
openssl | eq | 0.9.7107 | |
openssl | eq | 0.9.7 beta2 |
crypto.di.uminho.pt/CACE/CT-RSA2012-openssl-src.zip
eprint.iacr.org/2011/633
openwall.com/lists/oss-security/2011/12/01/6
www.debian.org/security/2012/dsa-2390
bugzilla.redhat.com/show_bug.cgi?id=757909
cvs.openssl.org/filediff?f=openssl/crypto/bn/bn_nist.c&v1=1.14&v2=1.21
marc.info/?t=119271238800004
rt.openssl.org/Ticket/Display.html?id=1593&user=guest&pass=guest