the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
Vulnerability Feeds & WidgetsNew  

Vulnerability Details : 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.
Publish Date : 2011-04-08 Last Update Date : 2017-09-18
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Execute Code

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
AV:A/AC:M/Au:N/C:C/I:C/A:C 2011-03-18 2011-04-05
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-0997 unix
ELSA-2011:0428: dhcp security update (Important) oval:org.mitre.oval:def:23459 unix
RHSA-2011:0428: dhcp security update (Important) oval:org.mitre.oval:def:21712 unix
RHSA-2011:0428: dhcp security update (Important) oval:com.redhat.rhsa:def:20110428 unix
VMSA-2011-0010 VMware ESX third party updates for Service Console packages glibc and dhcp oval:org.mitre.oval:def:12812 unix
VMware ESX third party updates for Service Console packages glibc and dhcp oval:org.mitre.oval:def:20394 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-0997

# Product Type Vendor Product Version Update Edition Language
1 Application ISC Dhcp 3.0 Version Details Vulnerabilities
2 Application ISC Dhcp 3.0.1 RC2 Version Details Vulnerabilities
3 Application ISC Dhcp 3.0.1 Version Details Vulnerabilities
4 Application ISC Dhcp 3.0.1 RC6 Version Details Vulnerabilities
5 Application ISC Dhcp 3.0.1 RC7 Version Details Vulnerabilities
6 Application ISC Dhcp 3.0.1 Rc14 Version Details Vulnerabilities
7 Application ISC Dhcp 3.0.1 Rc12 Version Details Vulnerabilities
8 Application ISC Dhcp 3.0.1 Rc13 Version Details Vulnerabilities
9 Application ISC Dhcp 3.0.1 RC9 Version Details Vulnerabilities
10 Application ISC Dhcp 3.0.1 Rc10 Version Details Vulnerabilities
11 Application ISC Dhcp 3.0.1 RC5 Version Details Vulnerabilities
12 Application ISC Dhcp 3.0.1 Rc11 Version Details Vulnerabilities
13 Application ISC Dhcp 3.0.1 RC1 Version Details Vulnerabilities
14 Application ISC Dhcp 3.0.1 RC8 Version Details Vulnerabilities
15 Application ISC Dhcp 3.0.2 RC1 Version Details Vulnerabilities
16 Application ISC Dhcp 3.0.2 RC2 Version Details Vulnerabilities
17 Application ISC Dhcp 3.0.2 B1 Version Details Vulnerabilities
18 Application ISC Dhcp 3.0.2 RC3 Version Details Vulnerabilities
19 Application ISC Dhcp 3.0.2 Version Details Vulnerabilities
20 Application ISC Dhcp 3.0.3 Version Details Vulnerabilities
21 Application ISC Dhcp 3.0.3 B3 Version Details Vulnerabilities
22 Application ISC Dhcp 3.0.3 B1 Version Details Vulnerabilities
23 Application ISC Dhcp 3.0.3 B2 Version Details Vulnerabilities
24 Application ISC Dhcp 3.0.4 B3 Version Details Vulnerabilities
25 Application ISC Dhcp 3.0.4 RC1 Version Details Vulnerabilities
26 Application ISC Dhcp 3.0.4 B2 Version Details Vulnerabilities
27 Application ISC Dhcp 3.0.4 Version Details Vulnerabilities
28 Application ISC Dhcp 3.0.4 B1 Version Details Vulnerabilities
29 Application ISC Dhcp 3.0.5 RC1 Version Details Vulnerabilities
30 Application ISC Dhcp 3.0.5 Version Details Vulnerabilities
31 Application ISC Dhcp 3.0.6 RC1 Version Details Vulnerabilities
32 Application ISC Dhcp 3.1-esv Version Details Vulnerabilities
33 Application ISC Dhcp 3.1.0 B2 Version Details Vulnerabilities
34 Application ISC Dhcp 3.1.0 Version Details Vulnerabilities
35 Application ISC Dhcp 3.1.0 B1 Version Details Vulnerabilities
36 Application ISC Dhcp 3.1.0 A1 Version Details Vulnerabilities
37 Application ISC Dhcp 3.1.0 A2 Version Details Vulnerabilities
38 Application ISC Dhcp 3.1.0 A3 Version Details Vulnerabilities
39 Application ISC Dhcp 3.1.0 RC1 Version Details Vulnerabilities
40 Application ISC Dhcp 3.1.1 RC1 Version Details Vulnerabilities
41 Application ISC Dhcp 3.1.1 RC2 Version Details Vulnerabilities
42 Application ISC Dhcp 3.1.2 B1 Version Details Vulnerabilities
43 Application ISC Dhcp 3.1.2 RC1 Version Details Vulnerabilities
44 Application ISC Dhcp 3.1.2 Version Details Vulnerabilities
45 Application ISC Dhcp 3.1.3 RC1 Version Details Vulnerabilities
46 Application ISC Dhcp 3.1.3 B1 Version Details Vulnerabilities
47 Application ISC Dhcp 3.1.3 Version Details Vulnerabilities
48 Application ISC Dhcp 4.1-esv Version Details Vulnerabilities
49 Application ISC Dhcp 4.1-esv RC1 Version Details Vulnerabilities
50 Application ISC Dhcp 4.2.0 B2 Version Details Vulnerabilities
51 Application ISC Dhcp 4.2.0 P1 Version Details Vulnerabilities
52 Application ISC Dhcp 4.2.0 RC1 Version Details Vulnerabilities
53 Application ISC Dhcp 4.2.0 A1 Version Details Vulnerabilities
54 Application ISC Dhcp 4.2.0 Version Details Vulnerabilities
55 Application ISC Dhcp 4.2.0 A2 Version Details Vulnerabilities
56 Application ISC Dhcp 4.2.0 B1 Version Details Vulnerabilities
57 Application ISC Dhcp 4.2.1 RC1 Version Details Vulnerabilities
58 Application ISC Dhcp 4.2.1 Version Details Vulnerabilities
59 Application ISC Dhcp 4.2.1 B1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
ISC Dhcp 59

- References For CVE-2011-0997
BID 47176 ISC DHCP 'dhclient' Shell Characters in Response Remote Code Execution Vulnerability Release Date:2016-10-14
VUPEN ADV-2011-0879
VUPEN ADV-2011-0886
VUPEN ADV-2011-0909
VUPEN ADV-2011-0915
VUPEN ADV-2011-0926
VUPEN ADV-2011-0965
XF iscdhcp-dhclient-command-execution(66580)
REDHAT RHSA-2011:0428
REDHAT RHSA-2011:0840
SLACKWARE SSA:2011-097-01
CERT-VN VU#107886
GENTOO GLSA-201301-06
SECTRACK 1025300

- Metasploit Modules Related To CVE-2011-0997

There are not any metasploit modules related to this CVE entry (Please visit for more information)

CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.