CVE-2011-0997

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    CVE-2011-0997

    Published: 8 Apr 2011Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057888.html, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058279.html, http://marc.info/?l=bugtraq&m=133226187115472&w=2, http://secunia.com/advisories/44037, http://secunia.com/advisories/44048, http://secunia.com/advisories/44089, http://secunia.com/advisories/44090, http://secunia.com/advisories/44103, http://secunia.com/advisories/44127, http://secunia.com/advisories/44180, http://security.gentoo.org/glsa/glsa-201301-06.xml, http://securitytracker.com/id?1025300, http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593345, http://www.debian.org/security/2011/dsa-2216, http://www.debian.org/security/2011/dsa-2217, http://www.kb.cert.org/vuls/id/107886, http://www.mandriva.com/security/advisories?name=MDVSA-2011:073, http://www.redhat.com/support/errata/RHSA-2011-0428.html, http://www.redhat.com/support/errata/RHSA-2011-0840.html, http://www.securityfocus.com/bid/47176, http://www.ubuntu.com/usn/USN-1108-1, https://bugzilla.redhat.com/show_bug.cgi?id=689832, https://exchange.xforce.ibmcloud.com/vulnerabilities/66580, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12812, https://www.exploit-db.com/exploits/37623/, https://www.isc.org/software/dhcp/advisories/cve-2011-0997, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057888.html, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058279.html, http://marc.info/?l=bugtraq&m=133226187115472&w=2, https://bugzilla.redhat.com/show_bug.cgi?id=689832, https://www.isc.org/software/dhcp/advisories/cve-2011-0997, http://www.vupen.com/english/advisories/2011/0879, http://www.vupen.com/english/advisories/2011/0886, http://www.vupen.com/english/advisories/2011/0909, http://www.vupen.com/english/advisories/2011/0915, http://www.vupen.com/english/advisories/2011/0926, http://www.vupen.com/english/advisories/2011/0965, http://www.vupen.com/english/advisories/2011/1000, https://bugzilla.redhat.com/show_bug.cgi?id=689832, http://www.kb.cert.org/vuls/id/107886, http://www.osvdb.org/71493

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High