MGASA-2015-0466

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MGASA-2015-0466

Summary: Updated openssl packages fix security vulnerability

Details: If a client receives a ServerKeyExchange for an anonymous DH ciphersuite with the value of p set to 0 then a seg fault can occur leading to a possible denial of service attack (CVE-2015-1794). Loic Jonas Etienne of Qnective AG discovered that the signature verification routines will crash with a NULL pointer dereference if presented with an ASN.1 signature using the RSA PSS algorithm and absent mask generation function parameter. A remote attacker can exploit this flaw to crash any certificate verification operation and mount a denial of service attack (CVE-2015-3194). Adam Langley of Google/BoringSSL discovered that OpenSSL will leak memory when presented with a malformed X509_ATTRIBUTE structure (CVE-2015-3195). A race condition flaw in the handling of PSK identify hints was discovered, potentially leading to a double free of the identify hint data (CVE-2015-3196).

References: https://advisories.mageia.org/MGASA-2015-0466.html, https://bugs.mageia.org/show_bug.cgi?id=17292, http://openssl.org/news/secadv/20151203.txt, https://www.debian.org/security/2015/dsa-3413