CVE-2006-5051

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Summary

CVECVE-2006-5051
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2006-09-27 23:07:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionSignal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-415 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Mac Os X All All All All
Operating System Apple Mac Os X All All All All
Operating System Apple Mac Os X Server All All All All
Operating System Apple Mac Os X Server All All All All
Operating System Debian Debian Linux 3.1 All All All
Application Openbsd Openssh All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Red Hat update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
FreeBSD update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Debian update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
OpenPKG Corporation: Security: Security Advisories af854a3a-2127-422b-91ae-364da2661108 www.openpkg.org Broken Link
patches.sgi.com/support/free/security/advisories/20061001-01-P.asc af854a3a-2127-422b-91ae-364da2661108 patches.sgi.com Broken Link
Globus Toolkit GSI-OpenSSH Two Vulnerabilities - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Gentoo update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Download Patch ESX-3069097 for VMware ESX Server 3.0.1 af854a3a-2127-422b-91ae-364da2661108 www.vmware.com Broken Link
APPLE-SA-2007-03-13 Mac OS X v10.4.9 and Security Update 2007-003 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Mailing List
Webmail - OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Broken Link
Gentoo Linux Documentation -- OpenSSH: Multiple Denial of Service vulnerabilities af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Webmail - OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Broken Link
Page not found - SourceForge.net af854a3a-2127-422b-91ae-364da2661108 sourceforge.net Broken Link
www.openwall.com/lists/oss-security/2024/07/01/3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
US-CERT Technical Cyber Security Alert TA07-072A -- Apple Updates for Multiple Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.us-cert.gov Third Party Advisory, US Government Resource
Advisories - Mandriva Linux af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com Third Party Advisory
IBM OpenSSH for AIX Two Vulnerabilities - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
www.arkoon.fr/upload/alertes/36AK-2006-07-FR-1.0_FAST360_OPENSSH.pdf af854a3a-2127-422b-91ae-364da2661108 www.arkoon.fr Broken Link
www.arkoon.fr/upload/alertes/43AK-2006-09-FR-1.0_SSL360_OPENSSH.pdf af854a3a-2127-422b-91ae-364da2661108 www.arkoon.fr Broken Link
[security-announce] Globus Security Advisory 2007-02: GSI-OpenSSH vulnerability af854a3a-2127-422b-91ae-364da2661108 www-unix.globus.org Broken Link
Debian -- Security Information -- DSA-1212-1 openssh af854a3a-2127-422b-91ae-364da2661108 www.debian.org Broken Link
Red Hat update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
usn/usn-355-1 - Ubuntu: Linux for human beings af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Broken Link
VMWare ESX Server Multiple Vulnerabilities - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:22.openssh.asc af854a3a-2127-422b-91ae-364da2661108 ftp.freebsd.org Broken Link
Ubuntu update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Security Announcement af854a3a-2127-422b-91ae-364da2661108 www.novell.com Broken Link
Webmail - OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Broken Link
FreeBSD Security Advisory FreeBSD-SA-06:22.openssh af854a3a-2127-422b-91ae-364da2661108 lists.freebsd.org Mailing List
Download Patch ESX-9986131 for VMware ESX Server 3.0.1 af854a3a-2127-422b-91ae-364da2661108 www.vmware.com Broken Link
Mac OS X Security Update Fixes Multiple Vulnerabilities - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Broken Link
Avaya Products OpenSSH Multiple Vulnerabilities - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, 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 Broken Link
OpenBSD update for OpenSSH - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Portable OpenSSH GSSAPI Remote Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Broken Link, Third Party Advisory, VDB Entry
The Slackware Linux Project: Slackware Security Advisories af854a3a-2127-422b-91ae-364da2661108 slackware.com Broken Link
www.openwall.com/lists/oss-security/2024/07/28/3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
rhn.redhat.com | Red Hat Support af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Broken Link
SGI Advanced Linux Environment Multiple Updates - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
Mandriva update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
OpenBSD 4.0 errata af854a3a-2127-422b-91ae-364da2661108 www.openbsd.org Release Notes
'Announce: OpenSSH 4.4 released' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Mailing List
SUSE update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link
SecurityTracker.com Archives - OpenSSH Race Condition in Signal Handler Lets Remote Users Deny Service and May Potentially Permit Code Execution af854a3a-2127-422b-91ae-364da2661108 securitytracker.com Broken Link, Third Party Advisory, VDB Entry
www.openwall.com/lists/oss-security/2024/07/28/3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
ASA-2006-216 (RHSA-2006-0697) af854a3a-2127-422b-91ae-364da2661108 support.avaya.com Third Party Advisory
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org Broken Link
security.freebsd.org/advisories/FreeBSD-SA-06%3A22.openssh.asc af854a3a-2127-422b-91ae-364da2661108 security.freebsd.org Third Party Advisory
OpenSSH Signal Handling Vulnerability - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-1189-1 openssh-krb5 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Mailing List
access.redhat.com af854a3a-2127-422b-91ae-364da2661108 www.redhat.com Broken Link
www.osvdb.org/29264 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org Broken Link
Slackware update for openssh - Advisories - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
About Secunia Research | Flexera af854a3a-2127-422b-91ae-364da2661108 secunia.com Broken Link, Vendor Advisory
openssh.org/txt/release-4.4 af854a3a-2127-422b-91ae-364da2661108 openssh.org Release Notes
US-CERT Vulnerability Note VU#851340 af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org Third Party Advisory, US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

OrganizationPublishedContributorStatement
Red Hat2007-03-14Mark J CoxRed Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.

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