CVE-2006-4924
Summary
| CVE | CVE-2006-4924 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2006-09-27 01:07:00 UTC |
| Updated | 2026-04-23 00:35:47 UTC |
| Description | 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. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:N/AC:L/Au:N/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Openbsd | Openssh | 1.2 | All | All | All |
| Application | Openbsd | Openssh | 1.2.1 | All | All | All |
| Application | Openbsd | Openssh | 1.2.2 | All | All | All |
| Application | Openbsd | Openssh | 1.2.27 | All | All | All |
| Application | Openbsd | Openssh | 1.2.3 | All | All | All |
| Application | Openbsd | Openssh | 2.1 | All | All | All |
| Application | Openbsd | Openssh | 2.1.1 | All | All | All |
| Application | Openbsd | Openssh | 2.2 | All | All | All |
| Application | Openbsd | Openssh | 2.3 | All | All | All |
| Application | Openbsd | Openssh | 2.5 | All | All | All |
| Application | Openbsd | Openssh | 2.5.1 | All | All | All |
| Application | Openbsd | Openssh | 2.5.2 | All | All | All |
| Application | Openbsd | Openssh | 2.9 | All | All | All |
| Application | Openbsd | Openssh | 2.9.9 | All | All | All |
| Application | Openbsd | Openssh | 2.9.9p2 | All | All | All |
| Application | Openbsd | Openssh | 2.9p1 | All | All | All |
| Application | Openbsd | Openssh | 2.9p2 | All | All | All |
| Application | Openbsd | Openssh | 3.0 | All | All | All |
| Application | Openbsd | Openssh | 3.0.1 | All | All | All |
| Application | Openbsd | Openssh | 3.0.1p1 | All | All | All |
| Application | Openbsd | Openssh | 3.0.2 | All | All | All |
| Application | Openbsd | Openssh | 3.0.2p1 | All | All | All |
| Application | Openbsd | Openssh | 3.0p1 | All | All | All |
| Application | Openbsd | Openssh | 3.1 | All | All | All |
| Application | Openbsd | Openssh | 3.1p1 | All | All | All |
| Application | Openbsd | Openssh | 3.2 | All | All | All |
| Application | Openbsd | Openssh | 3.2.2 | All | All | All |
| Application | Openbsd | Openssh | 3.2.2p1 | All | All | All |
| Application | Openbsd | Openssh | 3.2.3p1 | All | All | All |
| Application | Openbsd | Openssh | 3.3 | All | All | All |
| Application | Openbsd | Openssh | 3.3p1 | All | All | All |
| Application | Openbsd | Openssh | 3.4 | All | All | All |
| Application | Openbsd | Openssh | 3.4p1 | All | All | All |
| Application | Openbsd | Openssh | 3.5 | All | All | All |
| Application | Openbsd | Openssh | 3.5p1 | All | All | All |
| Application | Openbsd | Openssh | 3.6 | All | All | All |
| Application | Openbsd | Openssh | 3.6.1 | All | All | All |
| Application | Openbsd | Openssh | 3.6.1p1 | All | All | All |
| Application | Openbsd | Openssh | 3.6.1p2 | All | All | All |
| Application | Openbsd | Openssh | 3.7 | All | All | All |
| Application | Openbsd | Openssh | 3.7.1 | All | All | All |
| Application | Openbsd | Openssh | 3.7.1p1 | All | All | All |
| Application | Openbsd | Openssh | 3.7.1p2 | All | All | All |
| Application | Openbsd | Openssh | 3.8 | All | All | All |
| Application | Openbsd | Openssh | 3.8.1 | All | All | All |
| Application | Openbsd | Openssh | 3.8.1p1 | All | All | All |
| Application | Openbsd | Openssh | 3.9 | All | All | All |
| Application | Openbsd | Openssh | 3.9.1 | All | All | All |
| Application | Openbsd | Openssh | 3.9.1p1 | All | All | All |
| Application | Openbsd | Openssh | 4.0 | All | All | All |
| Application | Openbsd | Openssh | 4.0p1 | All | All | All |
| Application | Openbsd | Openssh | 4.1p1 | All | All | All |
| Application | Openbsd | Openssh | 4.2 | All | All | All |
| Application | Openbsd | Openssh | 4.2p1 | All | All | All |
| Application | Openbsd | Openssh | 4.3 | All | All | All |
| Application | Openbsd | Openssh | 4.3p1 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.osvdb.org/29152 | af854a3a-2127-422b-91ae-364da2661108 | www.osvdb.org | |
| US-CERT Vulnerability Note VU#787448 | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | US Government Resource |
| UnixWare update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| Red Hat update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Gentoo Linux Documentation -- OpenSSH: Denial of Service | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| FreeBSD update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| IBM X-Force Exchange | af854a3a-2127-422b-91ae-364da2661108 | exchange.xforce.ibmcloud.com | |
| Debian update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| OpenPKG Corporation: Security: Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | www.openpkg.org | |
| IBM HMC OpenSSH / OpenSSL Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| patches.sgi.com/support/free/security/advisories/20061001-01-P.asc | af854a3a-2127-422b-91ae-364da2661108 | patches.sgi.com | |
| Globus Toolkit GSI-OpenSSH Two Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| SecurityTracker.com Archives - OpenSSH SSH v1 CRC Attack Detection Implementation Lets Remote Users Deny Service | af854a3a-2127-422b-91ae-364da2661108 | securitytracker.com | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| Gentoo update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Download Patch ESX-3069097 for VMware ESX Server 3.0.1 | af854a3a-2127-422b-91ae-364da2661108 | www.vmware.com | |
| APPLE-SA-2007-03-13 Mac OS X v10.4.9 and Security Update 2007-003 | af854a3a-2127-422b-91ae-364da2661108 | lists.apple.com | |
| rPath update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Gentoo Linux Documentation -- OpenSSH: Multiple Denial of Service vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| 404 Content not found errors - SunSolve - wikis.sun.com | af854a3a-2127-422b-91ae-364da2661108 | sunsolve.sun.com | |
| Page not found - SourceForge.net | af854a3a-2127-422b-91ae-364da2661108 | sourceforge.net | |
| US-CERT Technical Cyber Security Alert TA07-072A -- Apple Updates for Multiple Vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.us-cert.gov | US Government Resource |
| Trustix updates for openssh and openssl - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Advisories - Mandriva Linux | af854a3a-2127-422b-91ae-364da2661108 | www.mandriva.com | |
| IBM OpenSSH for AIX Two Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| hypersonic.bluecoat.com/support/securityadvisories/ssh_server_on_sg | af854a3a-2127-422b-91ae-364da2661108 | hypersonic.bluecoat.com | |
| ASA-2006-262 HP-UX Secure Shell Remote Denial of Service (HPSBUX02178) | af854a3a-2127-422b-91ae-364da2661108 | support.avaya.com | |
| [security-announce] Globus Security Advisory 2007-02: GSI-OpenSSH vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www-unix.globus.org | |
| Debian -- Security Information -- DSA-1212-1 openssh | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Patch |
| Red Hat update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| usn/usn-355-1 - Ubuntu: Linux for human beings | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| VMWare ESX Server Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:22.openssh.asc | af854a3a-2127-422b-91ae-364da2661108 | ftp.freebsd.org | |
| Gentoo update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Ubuntu update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Security Announcement | af854a3a-2127-422b-91ae-364da2661108 | www.novell.com | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| Download Patch ESX-9986131 for VMware ESX Server 3.0.1 | af854a3a-2127-422b-91ae-364da2661108 | www.vmware.com | |
| www.trustix.org/errata/2006/0054 | af854a3a-2127-422b-91ae-364da2661108 | www.trustix.org | |
| SourceForge.net: SysAdmin Tools from ITeF!x: Files | af854a3a-2127-422b-91ae-364da2661108 | sourceforge.net | |
| Mac OS X Security Update Fixes Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| Avaya Products OpenSSH Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| About the security content of Mac OS X 10.4.9 and Security Update 2007-003 | af854a3a-2127-422b-91ae-364da2661108 | docs.info.apple.com | |
| 207955 – CVE-2006-4924 openssh DoS | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Patch, Vendor Advisory |
| OpenBSD update for OpenSSH - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Sun Solaris sshd Identical Blocks Denial of Service Vulnerability - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| The Slackware Linux Project: Slackware Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | slackware.com | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| ftp.sco.com/pub/unixware7/714/security/p534336/p534336.txt | af854a3a-2127-422b-91ae-364da2661108 | ftp.sco.com | |
| rhn.redhat.com | Red Hat Support | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| blogs.sun.com/security/entry/sun_alert_102962_security_vulnerability | af854a3a-2127-422b-91ae-364da2661108 | blogs.sun.com | |
| SGI Advanced Linux Environment Multiple Updates - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Gentoo Bug 148228 - net-misc/openssh Multiple minor issues CVE-2006-4924 CVE-2006-4925 | af854a3a-2127-422b-91ae-364da2661108 | bugs.gentoo.org | |
| Mandriva update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| OpenBSD 4.0 errata | af854a3a-2127-422b-91ae-364da2661108 | www.openbsd.org | |
| 'Announce: OpenSSH 4.4 released' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| SUSE update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Repository / Oval Repository | af854a3a-2127-422b-91ae-364da2661108 | oval.cisecurity.org | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| ASA-2006-216 (RHSA-2006-0697) | af854a3a-2127-422b-91ae-364da2661108 | support.avaya.com | |
| security.freebsd.org/advisories/FreeBSD-SA-06%3A22.openssh.asc | af854a3a-2127-422b-91ae-364da2661108 | security.freebsd.org | |
| IT Resource Center - login / register | af854a3a-2127-422b-91ae-364da2661108 | itrc.hp.com | |
| Blue Coat ProxySG SSH Server Denial of Service Vulnerability - Secunia Advisories - Vulnerability Information - Secunia.com | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | |
| OpenSSH Identical Blocks Denial of Service Vulnerability - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| SUSE updates for openssh, openssl, and bind9 - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Security Announcement | af854a3a-2127-422b-91ae-364da2661108 | www.novell.com | |
| Debian -- Security Information -- DSA-1189-1 openssh-krb5 | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Patch |
| access.redhat.com | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | |
| Webmail - OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | |
| [#RPL-661] openssh denial of service CVE-2006-4924 and client unclean exit CVE-2006-4925 - rPath JIRA | af854a3a-2127-422b-91ae-364da2661108 | issues.rpath.com | |
| Avaya PDS HP-UX Secure Shell / OpenSSL Multiple Vulnerabilities - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Slackware update for openssh - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| About Secunia Research | Flexera | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| OpenSSH Duplicated Block Remote Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Exploit, Patch |
| HP-UX update for Secure Shell - Advisories - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Repository / Oval Repository | af854a3a-2127-422b-91ae-364da2661108 | oval.cisecurity.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
| Organization | Published | Contributor | Statement |
|---|---|---|---|
| Red Hat | 2007-03-14 | Mark J Cox | Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch. |
There are currently no legacy QID mappings associated with this CVE.