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CVE-2011-1945

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 201312-03
Posted Dec 4, 2013
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201312-3 - Multiple vulnerabilities have been found in OpenSSL allowing remote attackers to determine private keys or cause a Denial of Service. Versions less than 1.0.0i are affected.

tags | advisory, remote, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2006-7250, CVE-2011-1945, CVE-2012-0884, CVE-2012-1165, CVE-2012-2110, CVE-2012-2333, CVE-2012-2686, CVE-2013-0166, CVE-2013-0169
MD5 | 983349929fdaa85d6f1467fa95eafa13
HP Security Bulletin HPSBMU02764 SSRT100827 2
Posted Apr 20, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBMU02764 SSRT100827 2 - Potential security vulnerabilities have been identified with HP System Management Homepage (SMH) running on Linux and Windows. The vulnerabilities could be exploited remotely and locally resulting in cross site request forgery (CSRF), Denial of Service (DoS), execution of arbitrary code, and other vulnerabilities. Revision 2 of this advisory.

tags | advisory, denial of service, arbitrary, vulnerability, csrf
systems | linux, windows
advisories | CVE-2009-0037, CVE-2010-0734, CVE-2010-1452, CVE-2010-1623, CVE-2010-2068, CVE-2010-2791, CVE-2010-3436, CVE-2010-4409, CVE-2010-4645, CVE-2011-0014, CVE-2011-0195, CVE-2011-0419, CVE-2011-1148, CVE-2011-1153, CVE-2011-1464, CVE-2011-1467, CVE-2011-1468, CVE-2011-1470, CVE-2011-1471, CVE-2011-1928, CVE-2011-1938, CVE-2011-1945, CVE-2011-2192, CVE-2011-2202, CVE-2011-2483, CVE-2011-3182, CVE-2011-3189, CVE-2011-3192
MD5 | aff846af673c7b44d692485afd250089
HP Security Bulletin HPSBMU02764 SSRT100827
Posted Apr 17, 2012
Authored by HP | Site hp.com

HP Security Bulletin HPSBMU02764 SSRT100827 - Potential security vulnerabilities have been identified with HP System Management Homepage (SMH) running on Linux and Windows. The vulnerabilities could be exploited remotely and locally resulting in cross site request forgery (CSRF), Denial of Service (DoS), execution of arbitrary code, and other vulnerabilities. Revision 1 of this advisory.

tags | advisory, denial of service, arbitrary, vulnerability, csrf
systems | linux, windows
advisories | CVE-2009-0037, CVE-2010-0734, CVE-2010-1452, CVE-2010-1623, CVE-2010-2068, CVE-2010-2791, CVE-2010-3436, CVE-2010-4409, CVE-2010-4645, CVE-2011-0014, CVE-2011-0195, CVE-2011-0419, CVE-2011-1148, CVE-2011-1153, CVE-2011-1464, CVE-2011-1467, CVE-2011-1468, CVE-2011-1470, CVE-2011-1471, CVE-2011-1928, CVE-2011-1938, CVE-2011-1945, CVE-2011-2192, CVE-2011-2202, CVE-2011-2483, CVE-2011-3182, CVE-2011-3189, CVE-2011-3192
MD5 | 230e5876c2c2c77609e110526b8cc06b
Ubuntu Security Notice USN-1357-1
Posted Feb 10, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1357-1 - It was discovered that the elliptic curve cryptography (ECC) subsystem in OpenSSL, when using the Elliptic Curve Digital Signature Algorithm (ECDSA) for the ECDHE_ECDSA cipher suite, did not properly implement curves over binary fields. This could allow an attacker to determine private keys via a timing attack. This issue only affected Ubuntu 8.04 LTS, Ubuntu 10.04 LTS, Ubuntu 10.10 and Ubuntu 11.04. Adam Langley discovered that the ephemeral Elliptic Curve Diffie-Hellman (ECDH) functionality in OpenSSL did not ensure thread safety while processing handshake messages from clients. This could allow a remote attacker to cause a denial of service via out-of-order messages that violate the TLS protocol. This issue only affected Ubuntu 8.04 LTS, Ubuntu 10.04 LTS, Ubuntu 10.10 and Ubuntu 11.04. Various other issues were also addressed.

tags | advisory, remote, denial of service, protocol
systems | linux, ubuntu
advisories | CVE-2011-1945, CVE-2011-3210, CVE-2011-4108, CVE-2011-4108, CVE-2012-0050, CVE-2011-4109, CVE-2011-4354, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0027, CVE-2011-1945, CVE-2011-3210, CVE-2011-4108, CVE-2011-4109, CVE-2011-4354, CVE-2011-4576, CVE-2011-4577, CVE-2011-4619, CVE-2012-0027, CVE-2012-0050
MD5 | cb9906382e5228bc3514db5a3b873c3a
Mandriva Linux Security Advisory 2011-137
Posted Sep 28, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-137 - The elliptic curve cryptography subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm 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. crypto/x509/x509_vfy.c in OpenSSL 1.0.x before 1.0.0e does not initialize certain structure members, which makes it easier for remote attackers to bypass CRL validation by using a nextUpdate value corresponding to a time in the past. The ephemeral ECDH ciphersuite functionality in OpenSSL 0.9.8 through 0.9.8s and 1.0.x before 1.0.0e does not ensure thread safety during processing of handshake messages, which allows remote attackers to cause a denial of service via out-of-order messages that violate the TLS protocol.

tags | advisory, remote, denial of service, crypto, protocol
systems | linux, mandriva
advisories | CVE-2011-1945, CVE-2011-3207, CVE-2011-3210
MD5 | d4cdd08b16fe165439352bfa6ccaf846
Mandriva Linux Security Advisory 2011-136
Posted Sep 28, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-136 - The elliptic curve cryptography subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm 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.

tags | advisory
systems | linux, mandriva
advisories | CVE-2011-1945
MD5 | aad8354635e0daa4188bb666e77c1b6a
Debian Security Advisory 2309-1
Posted Sep 14, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2309-1 - Several fraudulent SSL certificates have been found in the wild issued by the DigiNotar Certificate Authority, obtained through a security compromise of said company. After further updates on this incident, it has been determined that all of DigiNotar's signing certificates can no longer be trusted. Debian, like other software distributors and vendors, has decided to distrust all of DigiNotar's CAs. In this update, this is done in the crypto library (a component of the OpenSSL toolkit) by marking such certificates as revoked. Any application that uses said component should now reject certificates signed by DigiNotar. Individual applications may allow users to override the validation failure. However, making exceptions is highly discouraged and should be carefully verified.

tags | advisory, crypto
systems | linux, debian
advisories | CVE-2011-1945
MD5 | 75778ebf110f3672b8da640ba66110e8
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