Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS : openssl vulnerabilities (USN-2385-1)
High Nessus Plugin ID 78538
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionIt was discovered that OpenSSL incorrectly handled memory when parsing DTLS SRTP extension data. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-3513)
It was discovered that OpenSSL incorrectly handled memory when verifying the integrity of a session ticket. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service. (CVE-2014-3567)
In addition, this update introduces support for the TLS Fallback Signaling Cipher Suite Value (TLS_FALLBACK_SCSV). This new feature prevents protocol downgrade attacks when certain applications such as web browsers attempt to reconnect using a lower protocol version for interoperability reasons.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected libssl0.9.8 and / or libssl1.0.0 packages.