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CVE-2011-1945

Date: May 31, 2011

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.

Language: C

Severity Score

Related Resources (15)

https://people.canonical.com/~ubuntu-security/cve/CVE-2011-1945
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
https://hermes.opensuse.org/messages/8760466
http://www.debian.org/security/2011/dsa-2309
http://support.apple.com/kb/HT5784
https://hermes.opensuse.org/messages/8764170
https://security-tracker.debian.org/tracker/CVE-2011-1945
http://eprint.iacr.org/2011/232.pdf
http://www.kb.cert.org/vuls/id/MAPG-8FENZ3
http://secunia.com/advisories/44935
http://www.mandriva.com/security/advisories?name=MDVSA-2011:136
http://www.mandriva.com/security/advisories?name=MDVSA-2011:137
http://www.kb.cert.org/vuls/id/536044
https://nvd.nist.gov/vuln/detail/CVE-2011-1945
https://www.mend.io/vulnerability-database/CVE-2011-1945

Severity Score

Weakness Type (CWE)

Cryptographic Issues

CWE-310

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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