FreeBSD Security Advisory - OpenSSH clients does not correctly verify DNS SSHFP records when a server offers a certificate. OpenSSH servers which are configured to allow password authentication using PAM (default) would allow many password attempts.
8cb4a72bf773c38e284608edf83d9522Mandriva Linux Security Advisory 2015-095 - sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config, which allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character. Matthew Vernon reported that if a SSH server offers a HostCertificate that the ssh client doesn't accept, then the client doesn't check the DNS for SSHFP records. As a consequence a malicious server can disable SSHFP-checking by presenting a certificate.
b210e2d7303f1204821fcbd31f1ec35cRed Hat Security Advisory 2015-0425-02 - 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 OpenSSH clients did not correctly verify DNS SSHFP records. A malicious server could use this flaw to force a connecting client to skip the DNS SSHFP record check and require the user to perform manual host verification of the DNS SSHFP record. It was found that when OpenSSH was used in a Kerberos environment, remote authenticated users were allowed to log in as a different user if they were listed in the ~/.k5users file of that user, potentially bypassing intended authentication restrictions.
c190f95272450de057818506fdcee87bHP Security Bulletin HPSBUX03188 SSRT101487 1 - Potential security vulnerabilities have been identified with HP-UX running HP Secure Shell. These vulnerabilities could be exploited remotely to create a Denial of Service (DoS) and other vulnerabilities. Revision 1 of this advisory.
60b082836fa9890c5a6a480b8d91b420Slackware Security Advisory - New openssh packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix a security issue.
73da44b563871c7248ad81c46fd35e9aRed Hat Security Advisory 2014-1552-02 - 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 OpenSSH clients did not correctly verify DNS SSHFP records. A malicious server could use this flaw to force a connecting client to skip the DNS SSHFP record check and require the user to perform manual host verification of the DNS SSHFP record. It was found that OpenSSH did not properly handle certain AcceptEnv parameter values with wildcard characters. A remote attacker could use this flaw to bypass intended environment variable restrictions.
40e04a3c3bad82810d0c8d2fa03d31bfMandriva Linux Security Advisory 2014-068 - sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config, which allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character. Matthew Vernon reported that if a SSH server offers a HostCertificate that the ssh client doesn't accept, then the client doesn't check the DNS for SSHFP records. As a consequence a malicious server can disable SSHFP-checking by presenting a certificate.
9a7f2f79a175a9f3638664f7698b9090Ubuntu Security Notice 2164-1 - Matthew Vernon discovered that OpenSSH did not correctly check SSHFP DNS records if a server presented an unacceptable host certificate. A malicious server could use this issue to disable SSHFP checking.
edd14163ba3272ee8b15954c4be57d8bDebian Linux Security Advisory 2894-1 - Two vulnerabilities were discovered in OpenSSH, an implementation of the SSH protocol suite.
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