National Cyber Awareness System

Vulnerability Summary for CVE-2010-4020

Overview

MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.

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-2010-3095

Hyperlink:http://www.vupen.com/english/advisories/2010/3095

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: 45117

Hyperlink:http://www.securityfocus.com/bid/45117

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: REDHAT

Name: RHSA-2010:0925

Hyperlink:http://www.redhat.com/support/errata/RHSA-2010-0925.html

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: SECUNIA

Name: 42399

Type: Advisory

Hyperlink:http://secunia.com/advisories/42399

External Source: OSVDB

Name: 69608

Hyperlink:http://osvdb.org/69608

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: FEDORA

Name: FEDORA-2010-18425

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html

External Source: FEDORA

Name: FEDORA-2010-18409

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.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