openSUSE Security Update : libopenssl-devel (openSUSE-SU-2011:0634-1)

This update of openssl fixes a timing attack. This attack can be used to obtain the private key of a TLS server whenever ECDSA signatures are used. CVE-2011-1945: CVSS v2 Base Score: 4.3 important AV:N/AC:M/Au:N/C:P/I:N/A:N: Cryptographic Issues CWE-310 %NASLMINLEVEL 70300 C Tenable Network...

Design/Logic Flaw

The SSLVerifySignedServerKeyExchange function in libsecurityssl/lib/sslKeyExchange.c in the Secure Transport feature in the Data Security component in Apple iOS 6.x before 6.1.6 and 7.x before 7.0.6, Apple TV 6.x before 6.0.2, and Apple OS X 10.9.x before 10.9.2 does not check the signature in a...

Slackware Advisory SSA:2009-014-01 openssl

The remote host is missing an update as announced via advisory SSA:2009-014-01. OpenVAS Vulnerability Test $Id: esoftslkssa200901401.nasl 6598 2017-07-07 09:36:44Z cfischer $ Description: Auto-generated from the corresponding slackware advisory Authors: Thomas Reinke Copyright: Copyright c 2012...

Scientific Linux Security Update : openssl on SL6.x i386/x86_64

A race condition flaw has been found in the OpenSSL TLS server extension parsing code, which could affect some multithreaded OpenSSL applications. Under certain specific conditions, it may be possible for a remote attacker to trigger this race condition and cause such an application to crash, or...

Scientific Linux Security Update : openssl on SL6.x i386/x86_64

A ciphersuite downgrade flaw was found in the OpenSSL SSL/TLS server code. A remote attacker could possibly use this flaw to change the ciphersuite associated with a cached session stored on the server, if the server enabled the SSLOPNETSCAPEREUSECIPHERCHANGEBUG option, possibly forcing the clien...

tls-nextprotoneg NSE Script

Enumerates a TLS server's supported protocols by using the next protocol negotiation extension. This works by adding the next protocol negotiation extension in the client hello packet and parsing the returned server hello's NPN extension data. For more information, see: Script Arguments...

CVE-2011-4354

crypto/bn/bnnist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows...

DEBIAN-CVE-2011-4354

crypto/bn/bnnist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows...

Authentication flaw

crypto/bn/bnnist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows...

CVE-2011-4354

crypto/bn/bnnist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows...

CVE-2011-4354

OpenSSL vulnerability CVE-2011-4354 affects OpenSSL before 0.9.8h on 32-bit platforms, in the ECDH/ECDHE handshake with P-256 and P-384 curves, due to an incorrect modular reduction algorithm in bn_nist.c. This design flaw allows remote attackers to obtain the TLS server private key after multipl...

Three Questions for Billy Brumley on the OpenSSL Timing Attack

Timing attacks have been a problem for designers of cryptosystems–as well as for people implementing those systems–for a long time. They’ve plagued just about every popular system, and although practical attacks have been demonstrated many times, the problem and what can be done to defend against...

OpenSSL leaks ECDSA private key through a remote timing attack

Overview The OpenSSL ladder implementation for scalar multiplication of points on elliptic curves over binary fields is susceptible to a timing attack vulnerability. This vulnerability can be used to steal the private key of a TLS server that authenticates with ECDSA signatures and binary curves...

openSUSE Security Update : libopenssl-devel (openSUSE-SU-2010:0965-2)

Multithreaded OpenSSL servers using the TLS server extension are vulnerable to a buffer overrun attack CVE-2010-3864. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from openSUSE Security Update libopenssl-devel-3562. The...

openSUSE Security Update : libopenssl-devel (openSUSE-SU-2010:0965-1)

Multithreaded OpenSSL servers using the TLS server extension are vulnerable to a buffer overrun attack. CVE-2010-3864 has been assigned to this issue. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from openSUSE Security...

Fedora 13 : asterisk-1.6.2.17.2-1.fc13 (2011-3945)

The Asterisk Development Team has announced security releases for Asterisk branches 1.6.1, 1.6.2, and 1.8. The available security releases are released as versions 1.6.1.24, 1.6.2.17.2, and 1.8.3.2. These releases are available for immediate download at...

CVE-2011-1175

tcptls.c in the TCP/TLS server in Asterisk Open Source 1.6.1.x before 1.6.1.23, 1.6.2.x before 1.6.2.17.1, and 1.8.x before 1.8.3.1 allows remote attackers to cause a denial of service NULL pointer dereference and daemon crash by establishing many short TCP sessions to services that use a certain...

CVE-2011-1175

tcptls.c in the TCP/TLS server in Asterisk Open Source 1.6.1.x before 1.6.1.23, 1.6.2.x before 1.6.2.17.1, and 1.8.x before 1.8.3.1 allows remote attackers to cause a denial of service NULL pointer dereference and daemon crash by establishing many short TCP sessions to services that use a certain...

Fedora 15 : asterisk-1.8.3.2-1.fc15 (2011-3958)

The Asterisk Development Team has announced security releases for Asterisk branches 1.6.1, 1.6.2, and 1.8. The available security releases are released as versions 1.6.1.24, 1.6.2.17.2, and 1.8.3.2. These releases are available for immediate download at...

AST-2011-004:

Product Asterisk Summary Remote crash vulnerability in TCP/TLS server Nature of Advisory Denial of Service Susceptibility Remote Unauthenticated Sessions Severity Critical Exploits Known No Reported On March 1, 2011 Reported By Blake Cornell [email protected] and Chris Maj [email protected]...