low
2.6
CWE
310
Advisory Published
Updated

CVE-2011-1945

First published: Tue May 31 2011(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
OpenSSL=0.9.7-beta5
OpenSSL=0.9.7-beta3
OpenSSL=0.9.5a-beta2
OpenSSL=0.9.7-beta6
OpenSSL=0.9.8b
OpenSSL=0.9.7l
OpenSSL=0.9.6i
OpenSSL=0.9.8m
OpenSSL=0.9.3
OpenSSL=0.9.8c
OpenSSL=0.9.7-beta2
OpenSSL=1.0.0c
OpenSSL=0.9.7c
OpenSSL=1.0.0-beta1
OpenSSL=0.9.5-beta1
OpenSSL=0.9.8n
OpenSSL=1.0.0-beta2
OpenSSL=0.9.8p
OpenSSL=0.9.6d
OpenSSL=0.9.1c
OpenSSL=0.9.6
OpenSSL=0.9.7j
OpenSSL=0.9.6a
OpenSSL=0.9.8e
OpenSSL=0.9.4
OpenSSL=0.9.8g
OpenSSL=0.9.6a-beta2
OpenSSL=0.9.8k
OpenSSL=0.9.8d
OpenSSL=0.9.5a
OpenSSL=1.0.0-beta3
OpenSSL=0.9.6f
OpenSSL=0.9.8j
OpenSSL=0.9.6-beta3
OpenSSL=0.9.6l
OpenSSL=0.9.7k
OpenSSL=0.9.7g
OpenSSL=0.9.6e
OpenSSL=0.9.7d
OpenSSL=0.9.8l
OpenSSL=0.9.7
OpenSSL=0.9.6b
OpenSSL=0.9.7e
OpenSSL=0.9.7b
OpenSSL=0.9.6a-beta1
OpenSSL=1.0.0-beta4
OpenSSL=0.9.6k
OpenSSL=0.9.8a
OpenSSL=0.9.6g
OpenSSL=0.9.6-beta2
OpenSSL=0.9.7m
OpenSSL=0.9.7-beta4
OpenSSL=0.9.3a
OpenSSL=0.9.6h
OpenSSL=1.0.0
OpenSSL=0.9.7-beta1
OpenSSL=0.9.7i
OpenSSL=0.9.7h
OpenSSL=0.9.8o
OpenSSL=1.0.0-beta5
OpenSSL=0.9.6j
OpenSSL<=1.0.0d
OpenSSL=0.9.8
OpenSSL=0.9.7a
OpenSSL=0.9.6c
OpenSSL=0.9.6-beta1
OpenSSL=0.9.6m
OpenSSL=0.9.8i
OpenSSL=0.9.8f
OpenSSL=0.9.5-beta2
OpenSSL=1.0.0a
OpenSSL=0.9.8h
OpenSSL=0.9.2b
OpenSSL=0.9.5
OpenSSL=0.9.5a-beta1
OpenSSL=1.0.0b
OpenSSL=0.9.6a-beta3
OpenSSL=0.9.7f

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-1945?

    CVE-2011-1945 is classified as a high severity vulnerability due to its potential impact on cryptographic operations.

  • How do I fix CVE-2011-1945?

    To fix CVE-2011-1945, you should upgrade OpenSSL to a version later than 1.0.0d.

  • Which versions of OpenSSL are affected by CVE-2011-1945?

    CVE-2011-1945 affects OpenSSL versions up to and including 1.0.0d, as well as several older versions.

  • What types of attacks can exploit CVE-2011-1945?

    CVE-2011-1945 can potentially be exploited by attackers to gain unauthorized access to sensitive information through weak cryptographic implementations.

  • Is CVE-2011-1945 a client-side or server-side vulnerability?

    CVE-2011-1945 is primarily a server-side vulnerability, affecting how servers handle elliptic curve cryptography.

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