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Vulnerability Details : CVE-2009-0692

Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Publish Date : 2009-07-14 Last Update Date : 2017-09-28
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
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 CodeOverflow
CWE ID 119

- Vendor Statements

This issue affected the dhcp packages as shipped with Red Hat Enterprise Linux 3 and 4. Updated packages to correct this issue are available via Red Hat Network: This issue did not affect the dhcp packages as shipped with Red Hat Enterprise Linux 5 due to the use of FORTIFY_SOURCE protection mechanism that changes the exploitability of the issue into a controlled application termination.
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical
AV:A/AC:L/Au:N/C:C/I:C/A:C 2009-06-23 2009-07-14
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-0692 unix
DHCP dhclient Stack Overflow in script_write_params() Lets Remote Users Execute Arbitrary Code oval:org.mitre.oval:def:5941 unix
DSA-1833 dhcp3 -- several vulnerabilities oval:org.mitre.oval:def:8056 unix
DSA-1833-1 dhcp3 -- several oval:org.mitre.oval:def:12854 unix
DSA-1833-2 dhcp3 -- several oval:org.mitre.oval:def:13715 unix
RHSA-2009:1136: dhcp security update (Critical) oval:com.redhat.rhsa:def:20091136 unix
RHSA-2009:1154: dhcp security update (Critical) oval:com.redhat.rhsa:def:20091154 unix
Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0... oval:org.mitre.oval:def:10758 unix
USN-803-2 -- dhcp3 vulnerability oval:org.mitre.oval:def:12418 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-2009-0692

# Product Type Vendor Product Version Update Edition Language
1 Application ISC Dhcp 2.0 Version Details Vulnerabilities
2 Application ISC Dhcp 3.0 Version Details Vulnerabilities
3 Application ISC Dhcp 3.1 Version Details Vulnerabilities
4 Application ISC Dhcp 4.0 Version Details Vulnerabilities
5 Application ISC Dhcp 4.1.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
ISC Dhcp 5

- References For CVE-2009-0692
VUPEN ADV-2009-1891
SECTRACK 1022548
REDHAT RHSA-2009:1136
REDHAT RHSA-2009:1154
BID 35668 ISC DHCP 'dhclient' 'script_write_params()' Stack Buffer Overflow Vulnerability Release Date:2010-07-13
HP SSRT100018
CERT-VN VU#410676
SLACKWARE SSA:2009-195-01
GENTOO GLSA-200907-12
SUSE SUSE-SA:2009:037
NETBSD NetBSD-SA2009-010

- Metasploit Modules Related To CVE-2009-0692

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

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