The RSA-CRT implementation in PolarSSL before 1.2.9 does not properly perform Montgomery multiplication, which might allow remote attackers to conduct a timing side-channel attack and retrieve RSA private keys.
https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-05
http://www.securityfocus.com/bid/62771
http://www.debian.org/security/2013/dsa-2782
http://secunia.com/advisories/55084
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119018.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119014.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-October/118758.html