Gentoo Linux Security Advisory 201612-18 - Multiple vulnerabilities have been found in OpenSSH, the worst of which allows remote attackers to cause Denial of Service. Versions less than 7.3_p1-r7 are affected.
cc124780a02d52103b56c764eff6ad2156bc5a56b638ae35230124f1be579026Ubuntu Security Notice 2966-1 - 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. 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. Various other issues were also addressed.
8d08319b81c2a6de2568e6524b5d6c6312219c6acc3da869743e1e123b16ebd5Red Hat Security Advisory 2016-0466-01 - OpenSSH is OpenBSD's SSH protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. It was discovered that the OpenSSH server did not sanitize data received in requests to enable X11 forwarding. An authenticated client with restricted SSH access could possibly use this flaw to bypass intended restrictions. It was discovered that the OpenSSH sshd daemon did not check the list of keyboard-interactive authentication methods for duplicates. A remote attacker could use this flaw to bypass the MaxAuthTries limit, making it easier to perform password guessing attacks.
93381a3609cbd40ea19fd90f3d6532393c3c33d49bf30bab516193963789fd55Red Hat Security Advisory 2016-0465-01 - OpenSSH is OpenBSD's SSH protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. It was discovered that the OpenSSH server did not sanitize data received in requests to enable X11 forwarding. An authenticated client with restricted SSH access could possibly use this flaw to bypass intended restrictions. An access flaw was discovered in OpenSSH; the OpenSSH client did not correctly handle failures to generate authentication cookies for untrusted X11 forwarding. A malicious or compromised remote X application could possibly use this flaw to establish a trusted connection to the local X server, even if only untrusted X11 forwarding was requested.
ec747fbcdba74a44a4ea458f9664256110da65f71f30774569e157e19509d8deFreeBSD Security Advisory - Due to insufficient input validation in OpenSSH, a client which has permission to establish X11 forwarding sessions to a server can piggyback arbitrary shell commands on the data intended to be passed to the xauth tool. An attacker with valid credentials and permission to establish X11 forwarding sessions can bypass other restrictions which may have been placed on their account, for instance using ForceCommand directives in the server's configuration file.
d2574fbe9a392afc705b1b7d4182a37f52ec3bece6bca525cafffff285a229b1OpenSSH versions 7.2p1 and below suffer from a command injection and /bin/false bypass vulnerability via xauth.
21d775c0fcb1c084c005d795ca4e1b1a4ba34f84303ab3202fc620f0852d90eeSlackware Security Advisory - New openssh packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.
6477699d57dfa5022f58dcdb5052861d7681ffefac5c19401d79840a5827107f
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