OpenSSL: Multiple vulnerabilities


### Background OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library. ### Description Multiple vulnerabilities have been found in OpenSSL: * Timing differences for decryption are exposed by CBC mode encryption in OpenSSL’s implementation of DTLS (CVE-2011-4108). * A policy check failure can result in a double-free error when X509_V_FLAG_POLICY_CHECK is set (CVE-2011-4109). * Clients and servers using SSL 3.0 handshakes do not clear the block cipher padding, allowing a record to contain up to 15 bytes of uninitialized memory, which could include sensitive information (CVE-2011-4576). * Assertion errors can occur during the handling of malformed X.509 certificates when OpenSSL is built with RFC 3779 support (CVE-2011-4577). * A resource management error can occur when OpenSSL’s server gated cryptography (SGC) does not properly handle handshake restarts (CVE-2011-4619). * Invalid parameters in the GOST block cipher are not properly handled by the GOST ENGINE(CVE-2012-0027). * An incorrect fix for CVE-2011-4108 creates an unspecified vulnerability for DTLS applications using OpenSSL (CVE-2012-0050). ### Impact A remote attacker may be able to cause a Denial of Service or obtain sensitive information, including plaintext passwords. ### Workaround There is no known workaround at this time. ### Resolution All OpenSSL users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.0g"

Affected Package

OS OS Version Package Name Package Version
Gentoo any dev-libs/openssl 1.0.0g