Ubuntu Security Notice 2547-1 - It was discovered that the Mono TLS implementation was vulnerable to the SKIP-TLS vulnerability. A remote attacker could possibly use this issue to perform client impersonation attacks. It was discovered that the Mono TLS implementation was vulnerable to the FREAK vulnerability. A remote attacker or a man in the middle could possibly use this issue to force the use of insecure ciphersuites. Various other issues were also addressed.
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Debian Linux Security Advisory 3202-1 - Researchers at INRIA and Xamarin discovered several vulnerabilities in mono, a platform for running and developing applications based on the ECMA/ISO Standards. Mono's TLS stack contained several problems that impersonation (via SKIP-TLS), SSLv2 fallback, and encryption weakening (via FREAK).
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