CVE-2014-3511

The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.

USN-2308-1 — openssl vulnerabilities

Affected: Ubuntu:14.04:LTS: openssl

Adam Langley and Wan-Teh Chang discovered that OpenSSL incorrectly handled certain DTLS packets. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2014-3505)

Adam Langley discovered that OpenSSL incorrectly handled memory when processing DTLS handshake messages. A remote attacker could use this issue to cause OpenSSL to consume memory, resulting in a denial of service. (CVE-2014-3506)

Adam Langley discovered that OpenSSL incorrectly handled memory when processing DTLS fragments. A remote attacker could use this issue to cause OpenSSL to leak memory, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-3507)

Ivan Fratric discovered that OpenSSL incorrectly leaked information in the pretty printing functions. When OpenSSL is used with certain applications, an attacker may use this issue to possibly gain access to sensitive information. (CVE-2014-3508)

Gabor Tyukasz discovered that OpenSSL contained a race condition when processing serverhello messages. A malicious server could use this issue to cause clients to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-3509)

Felix Gröbert discovered that OpenSSL incorrectly handled certain DTLS handshake messages. A malicious server could use this issue to cause clients to crash, resulting in a denial of service. (CVE-2014-3510)

David Benjamin and Adam Langl…

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CVE-2014-3511

USN-2308-1 — openssl vulnerabilities