sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector.
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:22.openssh.asc
http://blogs.sun.com/security/entry/sun_alert_102962_security_vulnerability
http://bugs.gentoo.org/show_bug.cgi?id=148228
http://docs.info.apple.com/article.html?artnum=305214
http://itrc.hp.com/service/cki/docDisplay.do?docId=c00815112
http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html
http://marc.info/?l=openssh-unix-dev&m=115939141729160&w=2
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207955
http://secunia.com/advisories/21923
http://secunia.com/advisories/22091
http://secunia.com/advisories/22116
http://secunia.com/advisories/22158
http://secunia.com/advisories/22164
http://secunia.com/advisories/22183
http://secunia.com/advisories/22196
http://secunia.com/advisories/22208
http://secunia.com/advisories/22236
http://secunia.com/advisories/22245
http://secunia.com/advisories/22270
http://secunia.com/advisories/22298
http://secunia.com/advisories/22352
http://secunia.com/advisories/22362
http://secunia.com/advisories/22487
http://secunia.com/advisories/22495
http://secunia.com/advisories/22823
http://secunia.com/advisories/22926
http://secunia.com/advisories/23038
http://secunia.com/advisories/23241
http://secunia.com/advisories/23340
http://secunia.com/advisories/23680
http://secunia.com/advisories/24479
http://secunia.com/advisories/24799
http://secunia.com/advisories/24805
http://secunia.com/advisories/25608
http://secunia.com/advisories/29371
http://secunia.com/advisories/34274
http://security.freebsd.org/advisories/FreeBSD-SA-06%3A22.openssh.asc
http://security.gentoo.org/glsa/glsa-200609-17.xml
http://security.gentoo.org/glsa/glsa-200611-06.xml
http://securitytracker.com/id?1016931
https://exchange.xforce.ibmcloud.com/vulnerabilities/29158
https://issues.rpath.com/browse/RPL-661
http://sourceforge.net/forum/forum.php?forum_id=681763
http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10462
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1193
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102962-1
http://support.avaya.com/elmodocs2/security/ASA-2006-216.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-262.htm
http://www.debian.org/security/2006/dsa-1189
http://www.debian.org/security/2006/dsa-1212
http://www.kb.cert.org/vuls/id/787448
http://www.mandriva.com/security/advisories?name=MDKSA-2006:179
http://www.novell.com/linux/security/advisories/2006_24_sr.html
http://www.novell.com/linux/security/advisories/2006_62_openssh.html
http://www.redhat.com/support/errata/RHSA-2006-0697.html
http://www.redhat.com/support/errata/RHSA-2006-0698.html
http://www.ubuntu.com/usn/usn-355-1
http://www.us-cert.gov/cas/techalerts/TA07-072A.html
http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html
http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html
http://www.vupen.com/english/advisories/2006/3777
http://www.vupen.com/english/advisories/2006/4401
http://www.vupen.com/english/advisories/2006/4869
http://www.vupen.com/english/advisories/2007/0930
http://www.vupen.com/english/advisories/2007/1332