MGASA-2015-0111

Updated openssl packages fix security vulnerabilities:

The function ASN1TYPEcmp will crash with an invalid read if an attempt is made to compare ASN.1 boolean types. Since ASN1TYPEcmp is used to check certificate signature algorithm consistency this can be used to crash any certificate verification operation and exploited in a DoS attack. Any application which performs certificate verification is vulnerable including OpenSSL clients and servers which enable client authentication (CVE-2015-0286).

Reusing a structure in ASN.1 parsing may allow an attacker to cause memory corruption via an invalid write. Such reuse is and has been strongly discouraged and is believed to be rare. Certificate parsing, OpenSSL clients, and OpenSSL servers are not affected (CVE-2015-0287).

The PKCS#7 parsing code does not handle missing outer ContentInfo correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with missing content and trigger a NULL pointer dereference on parsing. OpenSSL clients and servers are not affected (CVE-2015-0289).

A malicious client can trigger an OPENSSL_assert (i.e., an abort) in servers that both support SSLv2 and enable export cipher suites by sending a specially crafted SSLv2 CLIENT-MASTER-KEY message (CVE-2015-0293).

A malformed EC private key file consumed via the d2iECPrivateKey function could cause a use after free condition. This, in turn, could cause a double free in several private key parsing functions (such as d2iPrivateKey or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption for applications that receive EC private keys from untrusted sources. This scenario is considered rare (CVE-2015-0209).

The function X509toX509_REQ will crash with a NULL pointer dereference if the certificate key is invalid. This function is rarely used in practice (CVE-2015-0288).