The dtls1_reassemble_fragment function in d1_both.c in OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly validate fragment lengths in DTLS ClientHello messages, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) via a long non-initial fragment.

Affected: Ubuntu:14.04:LTS: openssl

Jüri Aedla discovered that OpenSSL incorrectly handled invalid DTLS fragments. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS, Ubuntu 13.10, and Ubuntu 14.04 LTS. (CVE-2014-0195)

Imre Rad discovered that OpenSSL incorrectly handled DTLS recursions. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2014-0221)

KIKUCHI Masashi discovered that OpenSSL incorrectly handled certain handshakes. A remote attacker could use this flaw to perform a machine-in-the-middle attack and possibly decrypt and modify traffic. (CVE-2014-0224)

Felix Gröbert and Ivan Fratrić discovered that OpenSSL incorrectly handled anonymous ECDH ciphersuites. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS, Ubuntu 13.10, and Ubuntu 14.04 LTS. (CVE-2014-3470)