CVE-2009-0846

krb5: ASN.1 decoder can free uninitialized pointer when decoding an invalid encoding (MITKRB5-SA-2009-002)

Severity Score

10.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

La función asn1_decode_generaltime en lib/krb5/asn.1/asn1_decode.c en el decodificador ASN.1 GeneralizedTime en MIT Kerberos 5 (también conocido como Krb5) anteriores a v1.6.4, permite a atacantes remotos provocar una denegación de servicio (caída del demonio) o posiblemente ejecución de código de su elección a través de vectores que implican una codificación DER inválida, que provocará una liberación del puntero no inicializado.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-03-06 CVE Reserved
2009-04-07 CVE Published
2024-08-06 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free
CWE-824: Access of Uninitialized Pointer

CAPEC

References (52)

URL	Tag	Source
http://lists.vmware.com/pipermail/security-announce/2009/000059.html	Broken Link
http://secunia.com/advisories/34594	Broken Link
http://secunia.com/advisories/34598	Broken Link
http://secunia.com/advisories/34617	Broken Link
http://secunia.com/advisories/34622	Broken Link
http://secunia.com/advisories/34628	Broken Link
http://secunia.com/advisories/34630	Broken Link
http://secunia.com/advisories/34637	Broken Link
http://secunia.com/advisories/34640	Broken Link
http://secunia.com/advisories/34734	Broken Link
http://secunia.com/advisories/35074	Broken Link
http://secunia.com/advisories/35667	Broken Link
http://support.apple.com/kb/HT3549	Third Party Advisory
http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm	Third Party Advisory
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html	Broken Link
http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html	Broken Link
http://wiki.rpath.com/Advisories:rPSA-2009-0058	Broken Link
http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058	Broken Link
http://www-01.ibm.com/support/docview.wss?uid=swg21396120	Broken Link
http://www.kb.cert.org/vuls/id/662091	Broken Link
http://www.securityfocus.com/archive/1/502527/100/0/threaded	Broken Link
http://www.securityfocus.com/archive/1/502546/100/0/threaded	Broken Link
http://www.securityfocus.com/archive/1/504683/100/0/threaded	Broken Link
http://www.securityfocus.com/bid/34409	Broken Link
http://www.securitytracker.com/id?1021994	Broken Link
http://www.us-cert.gov/cas/techalerts/TA09-133A.html	Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0008.html	Third Party Advisory
http://www.vupen.com/english/advisories/2009/0960	Broken Link
http://www.vupen.com/english/advisories/2009/0976	Broken Link
http://www.vupen.com/english/advisories/2009/1057	Broken Link
http://www.vupen.com/english/advisories/2009/1106	Broken Link
http://www.vupen.com/english/advisories/2009/1297	Broken Link
http://www.vupen.com/english/advisories/2009/2084	Broken Link
http://www.vupen.com/english/advisories/2009/2248	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10694	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5483	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6301	Broken Link

URL	Date	SRC

URL	Date	SRC
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-002.txt	2024-02-09

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html	2024-02-09
http://marc.info/?l=bugtraq&m=124896429301168&w=2	2024-02-09
http://marc.info/?l=bugtraq&m=130497213107107&w=2	2024-02-09
http://rhn.redhat.com/errata/RHSA-2009-0409.html	2024-02-09
http://rhn.redhat.com/errata/RHSA-2009-0410.html	2024-02-09
http://security.gentoo.org/glsa/glsa-200904-09.xml	2024-02-09
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1	2024-02-09
http://www.mandriva.com/security/advisories?name=MDVSA-2009:098	2024-02-09
http://www.redhat.com/support/errata/RHSA-2009-0408.html	2024-02-09
http://www.ubuntu.com/usn/usn-755-1	2024-02-09
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html	2024-02-09
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html	2024-02-09
https://access.redhat.com/security/cve/CVE-2009-0846	2009-04-07
https://bugzilla.redhat.com/show_bug.cgi?id=491036	2009-04-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				< 1.6.4 Search vendor "Mit" for product "Kerberos 5" and version " < 1.6.4"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				9 Search vendor "Fedoraproject" for product "Fedora" and version "9"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				10 Search vendor "Fedoraproject" for product "Fedora" and version "10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				6.06 Search vendor "Canonical" for product "Ubuntu Linux" and version "6.06"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				7.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "7.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				8.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "8.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				8.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "8.10"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 10.5.7 Search vendor "Apple" for product "Mac Os X" and version " < 10.5.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				4.0 Search vendor "Redhat" for product "Enterprise Linux" and version "4.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				3.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "3.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				4.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "4.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				4.7 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "4.7"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				2.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "2.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				3.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "3.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				4.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "4.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				2.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "2.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				3.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "3.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				4.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "4.0"		-		Affected