Explain CVE-2009-0846
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.
Affected Products: n/a
References: [{'name': '20090701 VMSA-2009-0008 ESX Service Console update for krb5', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/504683/100/0/threaded'}, {'tags': ['x_refsource_MISC'], 'url': 'http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047181.html'}, {'name': 'oval:org.mitre.oval:def:6301', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6301'}, {'name': 'MDVSA-2009:098', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2009:098'}, {'name': 'VU#662091', 'tags': ['third-party-advisory', 'x_refsource_CERT-VN'], 'url': 'http://www.kb.cert.org/vuls/id/662091'}, {'name': '20090407 MITKRB5-SA-2009-002: ASN.1 decoder frees uninitialized pointer [CVE-2009-0846]', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/502527/100/0/threaded'}, {'name': 'ADV-2009-0960', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/0960'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://support.apple.com/kb/HT3549'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://support.avaya.com/elmodocs2/security/ASA-2009-142.htm'}, {'name': '35667', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/35667'}, {'name': 'RHSA-2009:0408', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2009-0408.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.vmware.com/security/advisories/VMSA-2009-0008.html'}, {'name': '34637', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34637'}, {'name': 'SSRT100495', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=130497213107107&w=2'}, {'name': 'ADV-2009-2084', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/2084'}, {'name': 'oval:org.mitre.oval:def:10694', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10694'}, {'name': '34640', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34640'}, {'name': '35074', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/35074'}, {'name': '256728', 'tags': ['vendor-advisory', 'x_refsource_SUNALERT'], 'url': 'http://sunsolve.sun.com/search/document.do?assetkey=1-26-256728-1'}, {'name': 'GLSA-200904-09', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-200904-09.xml'}, {'tags': ['x_refsource_MISC'], 'url': 'http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5047180.html'}, {'name': 'ADV-2009-0976', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/0976'}, {'name': 'APPLE-SA-2009-05-12', 'tags': ['vendor-advisory', 'x_refsource_APPLE'], 'url': 'http://lists.apple.com/archives/security-announce/2009/May/msg00002.html'}, {'name': 'USN-755-1', 'tags': ['vendor-advisory', 'x_refsource_UBUNTU'], 'url': 'http://www.ubuntu.com/usn/usn-755-1'}, {'name': '34630', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34630'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www-01.ibm.com/support/docview.wss?uid=swg21396120'}, {'name': 'oval:org.mitre.oval:def:5483', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5483'}, {'name': 'ADV-2009-1057', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/1057'}, {'name': '34617', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34617'}, {'name': '34628', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34628'}, {'name': '34734', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34734'}, {'name': 'ADV-2009-2248', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/2248'}, {'name': 'TA09-133A', 'tags': ['third-party-advisory', 'x_refsource_CERT'], 'url': 'http://www.us-cert.gov/cas/techalerts/TA09-133A.html'}, {'tags': ['x_refsource_MISC'], 'url': 'http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0058'}, {'name': '34598', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34598'}, {'name': 'RHSA-2009:0409', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://rhn.redhat.com/errata/RHSA-2009-0409.html'}, {'name': 'ADV-2009-1297', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/1297'}, {'name': '34622', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34622'}, {'name': '1021994', 'tags': ['vdb-entry', 'x_refsource_SECTRACK'], 'url': 'http://www.securitytracker.com/id?1021994'}, {'name': 'FEDORA-2009-2852', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00206.html'}, {'name': 'FEDORA-2009-2834', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00205.html'}, {'name': 'RHSA-2009:0410', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://rhn.redhat.com/errata/RHSA-2009-0410.html'}, {'name': '[security-announce] 20090701 VMSA-2009-0008 ESX Service Console update for krb5', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://lists.vmware.com/pipermail/security-announce/2009/000059.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://wiki.rpath.com/Advisories:rPSA-2009-0058'}, {'name': '20090407 rPSA-2009-0058-1 krb5 krb5-server krb5-services krb5-test krb5-workstation', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/502546/100/0/threaded'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-002.txt'}, {'name': 'HPSBOV02682', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=130497213107107&w=2'}, {'name': '34594', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/34594'}, {'name': 'ADV-2009-1106', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2009/1106'}, {'name': 'HPSBUX02421', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=124896429301168&w=2'}, {'name': '34409', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/34409'}, {'name': 'SSRT090047', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=124896429301168&w=2'}]
CVE State: PUBLISHED