National Cyber-Alert System

Vulnerability Summary for CVE-2009-0847

Overview

The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

Vendor Statements (disclaimer)

Official Statement from Red Hat (04/09/2009)

Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.

References to Advisories, Solutions, and Tools

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US-CERT Technical Alert: TA09-133A

Name: TA09-133A

Hyperlink:http://www.us-cert.gov/cas/techalerts/TA09-133A.html

External Source: FEDORA

Name: FEDORA-2009-2852

Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html

External Source: FEDORA

Name: FEDORA-2009-2834

Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html

External Source: VUPEN

Name: ADV-2009-2248

Hyperlink:http://www.vupen.com/english/advisories/2009/2248

External Source: VUPEN

Name: ADV-2009-2084

Hyperlink:http://www.vupen.com/english/advisories/2009/2084

External Source: VUPEN

Name: ADV-2009-1297

Hyperlink:http://www.vupen.com/english/advisories/2009/1297

External Source: VUPEN

Name: ADV-2009-1106

Hyperlink:http://www.vupen.com/english/advisories/2009/1106

External Source: VUPEN

Name: ADV-2009-1057

Hyperlink:http://www.vupen.com/english/advisories/2009/1057

External Source: VUPEN

Name: ADV-2009-0976

Hyperlink:http://www.vupen.com/english/advisories/2009/0976

External Source: VUPEN

Name: ADV-2009-0960

Hyperlink:http://www.vupen.com/english/advisories/2009/0960

External Source: UBUNTU

Name: USN-755-1

Hyperlink:http://www.ubuntu.com/usn/usn-755-1

External Source: SECTRACK

Name: 1021993

Hyperlink:http://www.securitytracker.com/id?1021993

External Source: BID

Name: 34408

Hyperlink:http://www.securityfocus.com/bid/34408

External Source: BUGTRAQ

Name: 20090407 rPSA-2009-0058-1 krb5 krb5-server krb5-services krb5-test krb5-workstation

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/502546/100/0/threaded

External Source: BUGTRAQ

Name: 20090407 MITKRB5-SA-2009-001: multiple vulnerabilities in SPNEGO, ASN.1 decoder [CVE-2009-0844 CVE-2009-0845 CVE-2009-0847]

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/502526/100/0/threaded

External Source: MANDRIVA

Name: MDVSA-2009:098

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2009:098

External Source: CONFIRM

Name: http://www-01.ibm.com/support/docview.wss?uid=swg21396120

Hyperlink:http://www-01.ibm.com/support/docview.wss?uid=swg21396120

External Source: MISC

Name: http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058

Hyperlink:http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058

External Source: CONFIRM

Name: http://wiki.rpath.com/Advisories:rPSA-2009-0058

Hyperlink:http://wiki.rpath.com/Advisories:rPSA-2009-0058

External Source: CONFIRM

Name: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt

Type: Advisory

Hyperlink:http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt

External Source: MISC

Name: http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html

Hyperlink:http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html

External Source: MISC

Name: http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html

Hyperlink:http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html

External Source: CONFIRM

Name: http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm

Hyperlink:http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm

External Source: CONFIRM

Name: http://support.apple.com/kb/HT3549

Hyperlink:http://support.apple.com/kb/HT3549

External Source: SUNALERT

Name: 256728

Hyperlink:http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1

External Source: GENTOO

Name: GLSA-200904-09

Hyperlink:http://security.gentoo.org/glsa/glsa-200904-09.xml

External Source: SECUNIA

Name: 35074

Hyperlink:http://secunia.com/advisories/35074

External Source: SECUNIA

Name: 34734

Hyperlink:http://secunia.com/advisories/34734

External Source: SECUNIA

Name: 34640

Hyperlink:http://secunia.com/advisories/34640

External Source: SECUNIA

Name: 34637

Hyperlink:http://secunia.com/advisories/34637

External Source: SECUNIA

Name: 34628

Hyperlink:http://secunia.com/advisories/34628

External Source: SECUNIA

Name: 34622

Hyperlink:http://secunia.com/advisories/34622

External Source: SECUNIA

Name: 34617

Hyperlink:http://secunia.com/advisories/34617

External Source: SECUNIA

Name: 34594

Hyperlink:http://secunia.com/advisories/34594

External Source: HP

Name: HPSBUX02421

Hyperlink:http://marc.info/?l=bugtraq&m=124896429301168&w=2

External Source: HP

Name: HPSBUX02421

Hyperlink:http://marc.info/?l=bugtraq&m=124896429301168&w=2

External Source: APPLE

Name: APPLE-SA-2009-05-12

Hyperlink:http://lists.apple.com/archives/security-announce/2009/May/msg00002.html