Vulnerability Details : CVE-2011-1945
Potential exploit
The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.
Products affected by CVE-2011-1945
- cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.4:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.1c:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.2b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.3:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.5:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.5a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6c:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6d:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6e:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6h:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6i:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6g:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:beta3:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6f:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6j:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6k:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7c:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7d:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6l:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6m:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6:beta3:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6a:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6a:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.5:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.5:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.5a:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7e:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6a:beta3:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:beta5:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7f:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.3a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.5a:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.6:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:beta4:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7:beta6:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7g:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7i:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7j:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7k:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8c:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7h:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8o:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8k:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8i:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8j:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8e:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8f:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8l:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7l:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.7m:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8p:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8n:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8d:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8g:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8h:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:0.9.8m:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0:beta4:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0:beta5:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-1945
7.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-1945
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.6
|
LOW | AV:N/AC:H/Au:N/C:P/I:N/A:N |
4.9
|
2.9
|
NIST |
CWE ids for CVE-2011-1945
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-1945
-
http://www.mandriva.com/security/advisories?name=MDVSA-2011:137
mandriva.com
-
http://support.apple.com/kb/HT5784
About the security content of OS X Mountain Lion v10.8.4 and Security Update 2013-002 - Apple Support
-
http://www.kb.cert.org/vuls/id/536044
VU#536044 - OpenSSL leaks ECDSA private key through a remote timing attackUS Government Resource
-
https://hermes.opensuse.org/messages/8760466
openSUSE.org - 503
-
http://secunia.com/advisories/44935
Sign in
-
https://hermes.opensuse.org/messages/8764170
openSUSE.org - 503
-
http://www.kb.cert.org/vuls/id/MAPG-8FENZ3
VU#536044 - OpenSSL leaks ECDSA private key through a remote timing attackUS Government Resource
-
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
Apple - Lists.apple.com
-
http://www.mandriva.com/security/advisories?name=MDVSA-2011:136
mandriva.com
-
http://eprint.iacr.org/2011/232.pdf
Exploit
-
http://www.debian.org/security/2011/dsa-2309
Debian -- Security Information -- DSA-2309-1 openssl
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