USN-2966-1

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USN-2966-1

Summary: openssh vulnerabilities

Details: Shayan Sadigh discovered that OpenSSH incorrectly handled environment files when the UseLogin feature is enabled. A local attacker could use this issue to gain privileges. (CVE-2015-8325) Ben Hawkes discovered that OpenSSH incorrectly handled certain network traffic. A remote attacker could possibly use this issue to cause OpenSSH to crash, resulting in a denial of service. This issue only applied to Ubuntu 15.10. (CVE-2016-1907) Thomas Hoger discovered that OpenSSH incorrectly handled untrusted X11 forwarding when the SECURITY extension is disabled. A connection configured as being untrusted could get switched to trusted in certain scenarios, contrary to expectations. (CVE-2016-1908) It was discovered that OpenSSH incorrectly handled certain X11 forwarding data. A remote authenticated attacker could possibly use this issue to bypass certain intended command restrictions. (CVE-2016-3115)

References: https://ubuntu.com/security/notices/USN-2966-1, https://ubuntu.com/security/CVE-2015-8325, https://ubuntu.com/security/CVE-2016-1907, https://ubuntu.com/security/CVE-2016-1908, https://ubuntu.com/security/CVE-2016-3115