National Cyber Awareness System

Vulnerability Summary for CVE-2010-4021

Overview

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: VUPEN

Name: ADV-2010-3118

Hyperlink:http://www.vupen.com/english/advisories/2010/3118

External Source: VUPEN

Name: ADV-2010-3094

Hyperlink:http://www.vupen.com/english/advisories/2010/3094

External Source: CONFIRM

Name: http://www.vmware.com/security/advisories/VMSA-2011-0007.html

Hyperlink:http://www.vmware.com/security/advisories/VMSA-2011-0007.html

External Source: UBUNTU

Name: USN-1030-1

Hyperlink:http://www.ubuntu.com/usn/USN-1030-1

External Source: SECTRACK

Name: 1024803

Hyperlink:http://www.securitytracker.com/id?1024803

External Source: BID

Name: 45122

Hyperlink:http://www.securityfocus.com/bid/45122

External Source: BUGTRAQ

Name: 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/517739/100/0/threaded

External Source: BUGTRAQ

Name: 20101130 MITKRB5-SA-2010-007 Multiple checksum handling vulnerabilities [CVE-2010-1324 CVE-2010-1323 CVE-2010-4020 CVE-2010-4021]

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/514953/100/0/threaded

External Source: MANDRIVA

Name: MDVSA-2010:246

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2010:246

External Source: CONFIRM

Name: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt

Type: Advisory

Hyperlink:http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt

External Source: CONFIRM

Name: http://support.apple.com/kb/HT4581

Hyperlink:http://support.apple.com/kb/HT4581

External Source: OSVDB

Name: 69607

Hyperlink:http://osvdb.org/69607

External Source: MLIST

Name: [security-announce] 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console

Hyperlink:http://lists.vmware.com/pipermail/security-announce/2011/000133.html

External Source: SUSE

Name: SUSE-SR:2010:024

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html

External Source: SUSE

Name: SUSE-SR:2010:023

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html

External Source: APPLE

Name: APPLE-SA-2011-03-21-1

Hyperlink:http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html

External Source: CONFIRM

Name: http://kb.vmware.com/kb/1035108

Hyperlink:http://kb.vmware.com/kb/1035108