Unspecified vulnerability in portable OpenSSH before 4.4, when running on some platforms, allows remote attackers to determine the validity of usernames via unknown vectors involving a GSSAPI "authentication abort."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10178
https://issues.rpath.com/browse/RPL-681
https://exchange.xforce.ibmcloud.com/vulnerabilities/29255
http://www.vupen.com/english/advisories/2007/0930
http://www.us-cert.gov/cas/techalerts/TA07-072A.html
http://www.securityfocus.com/bid/20245
http://www.securityfocus.com/archive/1/447861/100/200/threaded
http://www.redhat.com/support/errata/RHSA-2007-0703.html
http://www.redhat.com/support/errata/RHSA-2007-0540.html
http://www.novell.com/linux/security/advisories/2006_62_openssh.html
http://support.avaya.com/elmodocs2/security/ASA-2007-527.htm
http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.592566
http://securitytracker.com/id?1016939
http://security.gentoo.org/glsa/glsa-200611-06.xml
http://secunia.com/advisories/28320
http://secunia.com/advisories/27588
http://secunia.com/advisories/24479
http://secunia.com/advisories/22823
http://secunia.com/advisories/22495
http://secunia.com/advisories/22173
http://secunia.com/advisories/22158
http://rhn.redhat.com/errata/RHSA-2006-0697.html
http://openssh.org/txt/release-4.4
http://marc.info/?l=openssh-unix-dev&m=115939141729160&w=2
http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html