CVE-2011-1945

Low

Description

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.

SeverityLow
CVSS2.6
Exploit probability—
ProductOpenssl
PublishedMay 31, 2011
First seenMay 31, 2011

How to fix

Affected products

ProductAffected versionsFixed in
openssl opensslv ≤ 1.0.0d, 0.9.1c, 0.9.2b, 0.9.3, 0.9.3a, 0.9.4, 0.9.5, 0.9.5a, 0.9.6, 0.9.6a, 0.9.6b, 0.9.6c, 0.9.6d, 0.9.6e, 0.9.6f, 0.9.6g, 0.9.6h, 0.9.6i, 0.9.6j, 0.9.6k, 0.9.6l, 0.9.6m, 0.9.7, 0.9.7a, 0.9.7b, 0.9.7c, 0.9.7d, 0.9.7e, 0.9.7f, 0.9.7g, 0.9.7h, 0.9.7i, 0.9.7j, 0.9.7k, 0.9.7l, 0.9.7m, 0.9.8, 0.9.8a, 0.9.8b, 0.9.8c, 0.9.8d, 0.9.8e, 0.9.8f, 0.9.8g, 0.9.8h, 0.9.8i, 0.9.8j, 0.9.8k, 0.9.8l, 0.9.8m, 0.9.8n, 0.9.8o, 0.9.8p, 1.0.0, 1.0.0a, 1.0.0b, 1.0.0c—

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