Explain CVE-2011-0997
dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to dhclient-script.
Affected Products: n/a
References: [{'name': '47176', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/47176'}, {'name': 'ADV-2011-0886', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0886'}, {'name': '44103', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44103'}, {'name': 'RHSA-2011:0840', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-0840.html'}, {'name': '44037', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44037'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=689832'}, {'name': 'ADV-2011-0926', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0926'}, {'name': 'HPSBMU02752', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=133226187115472&w=2'}, {'name': '44127', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44127'}, {'name': 'MDVSA-2011:073', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:073'}, {'name': 'SSRT100802', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=133226187115472&w=2'}, {'name': 'ADV-2011-0909', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0909'}, {'name': 'oval:org.mitre.oval:def:12812', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12812'}, {'name': '71493', 'tags': ['vdb-entry', 'x_refsource_OSVDB'], 'url': 'http://www.osvdb.org/71493'}, {'name': '44090', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44090'}, {'name': '44048', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44048'}, {'name': 'FEDORA-2011-4934', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058279.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://www.isc.org/software/dhcp/advisories/cve-2011-0997'}, {'name': 'iscdhcp-dhclient-command-execution(66580)', 'tags': ['vdb-entry', 'x_refsource_XF'], 'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/66580'}, {'name': 'ADV-2011-0879', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0879'}, {'name': 'VU#107886', 'tags': ['third-party-advisory', 'x_refsource_CERT-VN'], 'url': 'http://www.kb.cert.org/vuls/id/107886'}, {'name': '1025300', 'tags': ['vdb-entry', 'x_refsource_SECTRACK'], 'url': 'http://securitytracker.com/id?1025300'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761'}, {'name': 'SSA:2011-097-01', 'tags': ['vendor-advisory', 'x_refsource_SLACKWARE'], 'url': 'http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593345'}, {'name': 'ADV-2011-1000', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/1000'}, {'name': 'ADV-2011-0915', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0915'}, {'name': 'ADV-2011-0965', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0965'}, {'name': '37623', 'tags': ['exploit', 'x_refsource_EXPLOIT-DB'], 'url': 'https://www.exploit-db.com/exploits/37623/'}, {'name': 'GLSA-201301-06', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-201301-06.xml'}, {'name': '44180', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44180'}, {'name': 'DSA-2217', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2011/dsa-2217'}, {'name': 'USN-1108-1', 'tags': ['vendor-advisory', 'x_refsource_UBUNTU'], 'url': 'http://www.ubuntu.com/usn/USN-1108-1'}, {'name': 'DSA-2216', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2011/dsa-2216'}, {'name': 'FEDORA-2011-4897', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057888.html'}, {'name': 'RHSA-2011:0428', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-0428.html'}, {'name': '44089', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44089'}]
CVE State: PUBLISHED