CVE-2011-1945

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    CVE-2011-1945

    Published: 31 May 2011Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: http://secunia.com/advisories/44935, http://www.debian.org/security/2011/dsa-2309, http://www.mandriva.com/security/advisories?name=MDVSA-2011:136, http://www.mandriva.com/security/advisories?name=MDVSA-2011:137, http://eprint.iacr.org/2011/232.pdf, http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html, http://support.apple.com/kb/HT5784, http://www.kb.cert.org/vuls/id/536044, http://www.kb.cert.org/vuls/id/MAPG-8FENZ3, https://hermes.opensuse.org/messages/8760466, https://hermes.opensuse.org/messages/8764170

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2011-1945 | CVE-DB