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Last updated: 5/30/2015 6:37:01 AM

CVE Publication rate: 13.17

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National Cyber Awareness System

Vulnerability Summary for CVE-2011-0997

Original release date: 04/08/2011
Last revised: 08/21/2013


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: FEDORA
Name: FEDORA-2011-4897
External Source: FEDORA
Name: FEDORA-2011-4934
External Source: REDHAT
Name: RHSA-2011:0428
External Source: VUPEN
Name: ADV-2011-0886
External Source: SECTRACK
Name: 1025300
External Source: DEBIAN
Name: DSA-2216
External Source: BID
Name: 47176
External Source: VUPEN
Name: ADV-2011-0965
External Source: VUPEN
Name: ADV-2011-0915
External Source: VUPEN
Name: ADV-2011-1000
External Source: DEBIAN
Name: DSA-2217
External Source: CONFIRM
Name: https://www.isc.org/software/dhcp/advisories/cve-2011-0997
Type: Advisory; Patch Information
External Source: OSVDB
Name: 71493
External Source: XF
Name: iscdhcp-dhclient-command-execution(66580)
External Source: VUPEN
Name: ADV-2011-0879
Type: Advisory
US-CERT Vulnerability Note: CERT-VN
Name: VU#107886
External Source: MANDRIVA
Name: MDVSA-2011:073
External Source: HP
Name: HPSBMU02752
External Source: REDHAT
Name: RHSA-2011:0840
External Source: VUPEN
Name: ADV-2011-0909
External Source: UBUNTU
Name: USN-1108-1
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=689832
Type: Patch Information
External Source: VUPEN
Name: ADV-2011-0926
External Source: OVAL
Name: oval:org.mitre.oval:def:12812
External Source: GENTOO
Name: GLSA-201301-06
External Source: SLACKWARE
Name: SSA:2011-097-01

References to Check Content

Identifier: oval:org.mitre.oval:def:12812
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:isc:dhcp:4.2.0:a1
* cpe:/a:isc:dhcp:4.2.0:a2
* cpe:/a:isc:dhcp:4.2.0:b1
* cpe:/a:isc:dhcp:4.2.0:b2
* cpe:/a:isc:dhcp:4.2.0:p1
* cpe:/a:isc:dhcp:4.2.0:rc1
* cpe:/a:isc:dhcp:4.2.0
* cpe:/a:isc:dhcp:4.2.1:b1
* cpe:/a:isc:dhcp:4.2.1:rc1
* cpe:/a:isc:dhcp:4.2.1
* cpe:/a:isc:dhcp:4.1-esv
* cpe:/a:isc:dhcp:4.1-esv:rc1
+ Configuration 2
+ OR
* cpe:/a:isc:dhcp:3.0.1:rc5
* cpe:/a:isc:dhcp:3.0.1:rc1
* cpe:/a:isc:dhcp:3.0.1:rc6
* cpe:/a:isc:dhcp:3.0.1:rc2
* cpe:/a:isc:dhcp:3.0.1:rc14
* cpe:/a:isc:dhcp:3.0.1:rc13
* cpe:/a:isc:dhcp:3.0.1:rc10
* cpe:/a:isc:dhcp:3.0.1:rc11
* cpe:/a:isc:dhcp:3.0.1:rc8
* cpe:/a:isc:dhcp:3.0.1:rc7
* cpe:/a:isc:dhcp:3.0.1:rc12
* cpe:/a:isc:dhcp:3.0.1:rc9
* cpe:/a:isc:dhcp:3.0.4
* cpe:/a:isc:dhcp:3.0
* cpe:/a:isc:dhcp:3.0.1
* cpe:/a:isc:dhcp:3.0.2:rc1
* cpe:/a:isc:dhcp:3.0.2:rc2
* cpe:/a:isc:dhcp:3.0.2:rc3
* cpe:/a:isc:dhcp:3.0.2
* cpe:/a:isc:dhcp:3.0.3
* cpe:/a:isc:dhcp:3.0.4:rc1
* cpe:/a:isc:dhcp:3.0.5:rc1
* cpe:/a:isc:dhcp:3.0.5
* cpe:/a:isc:dhcp:3.0.6:rc1
* cpe:/a:isc:dhcp:3.1.0:rc1
* cpe:/a:isc:dhcp:3.1.0
* cpe:/a:isc:dhcp:3.1.1:rc1
* cpe:/a:isc:dhcp:3.1.1:rc2
* cpe:/a:isc:dhcp:3.1.2:rc1
* cpe:/a:isc:dhcp:3.1.2
* cpe:/a:isc:dhcp:3.1.3:rc1
* cpe:/a:isc:dhcp:3.1.3
* cpe:/a:isc:dhcp:3.1-esv
* cpe:/a:isc:dhcp:3.0.4:b1
* cpe:/a:isc:dhcp:3.0.4:b3
* cpe:/a:isc:dhcp:3.0.4:b2
* cpe:/a:isc:dhcp:3.0.2:b1
* cpe:/a:isc:dhcp:3.0.3:b1
* cpe:/a:isc:dhcp:3.0.3:b2
* cpe:/a:isc:dhcp:3.0.3:b3
* cpe:/a:isc:dhcp:3.1.0:b1
* cpe:/a:isc:dhcp:3.1.0:a1
* cpe:/a:isc:dhcp:3.1.0:a2
* cpe:/a:isc:dhcp:3.1.0:a3
* cpe:/a:isc:dhcp:3.1.0:b2
* cpe:/a:isc:dhcp:3.1.2:b1
* cpe:/a:isc:dhcp:3.1.3:b1

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)