National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-0847 Detail

Description

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.

Source:  MITRE      Last Modified:  04/08/2009

Quick Info

CVE Dictionary Entry:
CVE-2009-0847
Original release date:
04/08/2009
Last revised:
09/28/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

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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Hyperlink Resource Type Source Name
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html External Source APPLE APPLE-SA-2009-05-12
http://marc.info/?l=bugtraq&m=124896429301168&w=2 External Source HP HPSBUX02421
http://security.gentoo.org/glsa/glsa-200904-09.xml External Source GENTOO GLSA-200904-09
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1 External Source SUNALERT 256728
http://support.apple.com/kb/HT3549 External Source CONFIRM http://support.apple.com/kb/HT3549
http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm External Source CONFIRM http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html External Source MISC http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html External Source MISC http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt Vendor Advisory External Source CONFIRM http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-001.txt
http://wiki.rpath.com/Advisories:rPSA-2009-0058 External Source CONFIRM http://wiki.rpath.com/Advisories:rPSA-2009-0058
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058 External Source MISC http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058
http://www.mandriva.com/security/advisories?name=MDVSA-2009:098 External Source MANDRIVA MDVSA-2009:098
http://www.securityfocus.com/archive/1/archive/1/502526/100/0/threaded External Source BUGTRAQ 20090407 MITKRB5-SA-2009-001: multiple vulnerabilities in SPNEGO, ASN.1 decoder [CVE-2009-0844 CVE-2009-0845 CVE-2009-0847]
http://www.securityfocus.com/archive/1/archive/1/502546/100/0/threaded External Source BUGTRAQ 20090407 rPSA-2009-0058-1 krb5 krb5-server krb5-services krb5-test krb5-workstation
http://www.securityfocus.com/bid/34408 External Source BID 34408
http://www.securitytracker.com/id?1021993 External Source SECTRACK 1021993
http://www.ubuntu.com/usn/usn-755-1 External Source UBUNTU USN-755-1
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource External Source CERT TA09-133A
http://www.vupen.com/english/advisories/2009/0960 External Source VUPEN ADV-2009-0960
http://www.vupen.com/english/advisories/2009/0976 External Source VUPEN ADV-2009-0976
http://www.vupen.com/english/advisories/2009/1057 External Source VUPEN ADV-2009-1057
http://www.vupen.com/english/advisories/2009/1106 External Source VUPEN ADV-2009-1106
http://www.vupen.com/english/advisories/2009/1297 External Source VUPEN ADV-2009-1297
http://www.vupen.com/english/advisories/2009/2084 External Source VUPEN ADV-2009-2084
http://www.vupen.com/english/advisories/2009/2248 External Source VUPEN ADV-2009-2248
http://www-01.ibm.com/support/docview.wss?uid=swg21396120 External Source CONFIRM http://www-01.ibm.com/support/docview.wss?uid=swg21396120
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6387 External Source OVAL oval:org.mitre.oval:def:6387
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html External Source FEDORA FEDORA-2009-2834
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html External Source FEDORA FEDORA-2009-2852

References to Check Content

Identifier:
oval:org.mitre.oval:def:6387
Check System:
http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:
http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:6387

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 2 change records found - show changes