USN-2912-1

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USN-2912-1

Summary: libssh vulnerabilities

Details: Mariusz Ziulek discovered that libssh incorrectly handled certain packets. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2015-3146) Aris Adamantiadis discovered that libssh incorrectly generated ephemeral secret keys of 128 bits instead of the recommended 1024 or 2048 bits when using the diffie-hellman-group1 and diffie-hellman-group14 methods. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2016-0739)

References: https://ubuntu.com/security/notices/USN-2912-1, https://ubuntu.com/security/CVE-2015-3146, https://ubuntu.com/security/CVE-2016-0739