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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssh | Openbsd | 1.2 (including) | 1.2 (including) |
| Openssh | Openbsd | 1.2.1 (including) | 1.2.1 (including) |
| Openssh | Openbsd | 1.2.2 (including) | 1.2.2 (including) |
| Openssh | Openbsd | 1.2.3 (including) | 1.2.3 (including) |
| Openssh | Openbsd | 1.2.27 (including) | 1.2.27 (including) |
| Openssh | Openbsd | 2.1 (including) | 2.1 (including) |
| Openssh | Openbsd | 2.1.1 (including) | 2.1.1 (including) |
| Openssh | Openbsd | 2.2 (including) | 2.2 (including) |
| Openssh | Openbsd | 2.3 (including) | 2.3 (including) |
| Openssh | Openbsd | 2.5 (including) | 2.5 (including) |
| Openssh | Openbsd | 2.5.1 (including) | 2.5.1 (including) |
| Openssh | Openbsd | 2.5.2 (including) | 2.5.2 (including) |
| Openssh | Openbsd | 2.9 (including) | 2.9 (including) |
| Openssh | Openbsd | 2.9.9 (including) | 2.9.9 (including) |
| Openssh | Openbsd | 2.9.9p2 (including) | 2.9.9p2 (including) |
| Openssh | Openbsd | 2.9p1 (including) | 2.9p1 (including) |
| Openssh | Openbsd | 2.9p2 (including) | 2.9p2 (including) |
| Openssh | Openbsd | 3.0 (including) | 3.0 (including) |
| Openssh | Openbsd | 3.0.1 (including) | 3.0.1 (including) |
| Openssh | Openbsd | 3.0.1p1 (including) | 3.0.1p1 (including) |
| Openssh | Openbsd | 3.0.2 (including) | 3.0.2 (including) |
| Openssh | Openbsd | 3.0.2p1 (including) | 3.0.2p1 (including) |
| Openssh | Openbsd | 3.0p1 (including) | 3.0p1 (including) |
| Openssh | Openbsd | 3.1 (including) | 3.1 (including) |
| Openssh | Openbsd | 3.1p1 (including) | 3.1p1 (including) |
| Openssh | Openbsd | 3.2 (including) | 3.2 (including) |
| Openssh | Openbsd | 3.2.2 (including) | 3.2.2 (including) |
| Openssh | Openbsd | 3.2.2p1 (including) | 3.2.2p1 (including) |
| Openssh | Openbsd | 3.2.3p1 (including) | 3.2.3p1 (including) |
| Openssh | Openbsd | 3.3 (including) | 3.3 (including) |
| Openssh | Openbsd | 3.3p1 (including) | 3.3p1 (including) |
| Openssh | Openbsd | 3.4 (including) | 3.4 (including) |
| Openssh | Openbsd | 3.4p1 (including) | 3.4p1 (including) |
| Openssh | Openbsd | 3.5 (including) | 3.5 (including) |
| Openssh | Openbsd | 3.5p1 (including) | 3.5p1 (including) |
| Openssh | Openbsd | 3.6 (including) | 3.6 (including) |
| Openssh | Openbsd | 3.6.1 (including) | 3.6.1 (including) |
| Openssh | Openbsd | 3.6.1p1 (including) | 3.6.1p1 (including) |
| Openssh | Openbsd | 3.6.1p2 (including) | 3.6.1p2 (including) |
| Openssh | Openbsd | 3.7 (including) | 3.7 (including) |
| Openssh | Openbsd | 3.7.1 (including) | 3.7.1 (including) |
| Openssh | Openbsd | 3.7.1p1 (including) | 3.7.1p1 (including) |
| Openssh | Openbsd | 3.7.1p2 (including) | 3.7.1p2 (including) |
| Openssh | Openbsd | 3.8 (including) | 3.8 (including) |
| Openssh | Openbsd | 3.8.1 (including) | 3.8.1 (including) |
| Openssh | Openbsd | 3.8.1p1 (including) | 3.8.1p1 (including) |
| Openssh | Openbsd | 3.9 (including) | 3.9 (including) |
| Openssh | Openbsd | 3.9.1 (including) | 3.9.1 (including) |
| Openssh | Openbsd | 3.9.1p1 (including) | 3.9.1p1 (including) |
| Openssh | Openbsd | 4.0 (including) | 4.0 (including) |
| Openssh | Openbsd | 4.0p1 (including) | 4.0p1 (including) |
| Openssh | Openbsd | 4.1p1 (including) | 4.1p1 (including) |
| Openssh | Openbsd | 4.2 (including) | 4.2 (including) |
| Openssh | Openbsd | 4.2p1 (including) | 4.2p1 (including) |
| Openssh | Openbsd | 4.3 (including) | 4.3 (including) |
| Openssh | Openbsd | 4.3p1 (including) | 4.3p1 (including) |
| Red Hat Enterprise Linux 2.1 | RedHat | openssh-0:3.1p1-21 | * |
| Red Hat Enterprise Linux 3 | RedHat | openssh-0:3.6.1p2-33.30.12 | * |
| Red Hat Enterprise Linux 4 | RedHat | openssh-0:3.9p1-8.RHEL4.17 | * |
| Openssh | Ubuntu | dapper | * |
| Openssh | Ubuntu | devel | * |
| Openssh | Ubuntu | edgy | * |
| Openssh | Ubuntu | feisty | * |
References
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:22.openssh.asc
- ftp://ftp.sco.com/pub/unixware7/714/security/p534336/p534336.txt
- ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.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\u0026m=115939141729160\u0026w=2
- 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
- http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2006\u0026m=slackware-security.592566
- http://sourceforge.net/forum/forum.php?forum_id=681763
- http://sourceforge.net/project/shownotes.php?release_id=461863\u0026group_id=69227
- 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-unix.globus.org/mail_archive/security-announce/2007/04/msg00000.html
- 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.openbsd.org/errata.html#ssh
- http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html
- http://www.osvdb.org/29152
- http://www.redhat.com/support/errata/RHSA-2006-0697.html
- http://www.redhat.com/support/errata/RHSA-2006-0698.html
- http://www.securityfocus.com/archive/1/447153/100/0/threaded
- http://www.securityfocus.com/bid/20216
- http://www.trustix.org/errata/2006/0054
- 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
- http://www.vupen.com/english/advisories/2007/2119
- http://www.vupen.com/english/advisories/2009/0740
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207955
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29158
- https://hypersonic.bluecoat.com/support/securityadvisories/ssh_server_on_sg
- https://issues.rpath.com/browse/RPL-661
- 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
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:22.openssh.asc
- ftp://ftp.sco.com/pub/unixware7/714/security/p534336/p534336.txt
- ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.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\u0026m=115939141729160\u0026w=2
- 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
- http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2006\u0026m=slackware-security.592566
- http://sourceforge.net/forum/forum.php?forum_id=681763
- http://sourceforge.net/project/shownotes.php?release_id=461863\u0026group_id=69227
- 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-unix.globus.org/mail_archive/security-announce/2007/04/msg00000.html
- 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.openbsd.org/errata.html#ssh
- http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html
- http://www.osvdb.org/29152
- http://www.redhat.com/support/errata/RHSA-2006-0697.html
- http://www.redhat.com/support/errata/RHSA-2006-0698.html
- http://www.securityfocus.com/archive/1/447153/100/0/threaded
- http://www.securityfocus.com/bid/20216
- http://www.trustix.org/errata/2006/0054
- 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
- http://www.vupen.com/english/advisories/2007/2119
- http://www.vupen.com/english/advisories/2009/0740
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207955
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29158
- https://hypersonic.bluecoat.com/support/securityadvisories/ssh_server_on_sg
- https://issues.rpath.com/browse/RPL-661
- 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