CVE-2011-1945

Impact:
Important
Public Date:
2011-05-17
Bugzilla:
709021: CVE-2011-1945 openssl: ECDSA private key leak through a remote timing attack

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2011-1945 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Not vulnerable. This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 3, 4, 5, or 6, as they do not include the support for the elliptic curve cryptography.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 openssl Not affected
Red Hat Enterprise Linux 6 openssl098e Not affected
Red Hat Enterprise Linux 5 openssl Not affected
Red Hat Enterprise Linux 5 openssl097a Not affected
Red Hat Enterprise Linux 4 openssl Not affected
Red Hat Enterprise Linux 4 openssl096b Not affected
Red Hat Enterprise Linux 3 openssl Not affected
Red Hat Enterprise Linux 3 openssl096b Not affected

Acknowledgements

Red Hat would like to thank the CERT/CC for reporting this issue. The CERT/CC acknowledges Billy Bob Brumley and Nicola Tuveri as the original reporters.

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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