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CVE-2009-0692

Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP...

10.0 HighPublic exploitFix available

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.

Exploit likelihood

25.8%Down 2.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 10.0

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.

Record
CVE-2009-0692
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2009-0692
Updated
2026-11-02
EUVDEUVD-2009-0692 No score

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.

Record
EUVD-2009-0692
Updated
2026-11-03
GitHub AdvisoriesGHSA-cjw8-pp44-m8v2 No score

Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP...

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.

Record
GHSA-cjw8-pp44-m8v2
Weakness
CWE-119
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
dhcp3
Debian:4.0
 before 3.0.4-13+etch2, plus listed versions
3.0.4-13
3.0.4-13+etch2
dhcp3
Debian:5.0
 before 3.1.1-6+lenny2, plus listed versions
3.1.1-6
3.1.1-6+lenny2
dhcp3
Debian:5.0
From an advisory covering 2 CVEs
 before 3.1.1-6+lenny3, plus listed versions
3.1.1-63.1.1-6+lenny2
3.1.1-6+lenny3
dhclient
Red Hat:rhel_eus:4.7::as
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhcp
Red Hat:rhel_eus:4.7::as
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhcp-debuginfo
Red Hat:rhel_eus:4.7::as
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhcp-devel
Red Hat:rhel_eus:4.7::as
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhclient
Red Hat:enterprise_linux:4::as
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp
Red Hat:enterprise_linux:4::as
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-debuginfo
Red Hat:enterprise_linux:4::as
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
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Affected packages
PackageAffectedFixed
dhcp-devel
Red Hat:enterprise_linux:4::as
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhclient
Red Hat:enterprise_linux:4::desktop
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp
Red Hat:enterprise_linux:4::desktop
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-debuginfo
Red Hat:enterprise_linux:4::desktop
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-devel
Red Hat:enterprise_linux:4::desktop
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhclient
Red Hat:rhel_eus:4.7::es
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhcp
Red Hat:rhel_eus:4.7::es
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhcp-debuginfo
Red Hat:rhel_eus:4.7::es
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhcp-devel
Red Hat:rhel_eus:4.7::es
 before 7:3.0.1-62.el4_7.1
7:3.0.1-62.el4_7.1
dhclient
Red Hat:enterprise_linux:4::es
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp
Red Hat:enterprise_linux:4::es
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-debuginfo
Red Hat:enterprise_linux:4::es
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-devel
Red Hat:enterprise_linux:4::es
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhclient
Red Hat:enterprise_linux:4::ws
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp
Red Hat:enterprise_linux:4::ws
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-debuginfo
Red Hat:enterprise_linux:4::ws
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhcp-devel
Red Hat:enterprise_linux:4::ws
 before 7:3.0.1-65.el4_8.1
7:3.0.1-65.el4_8.1
dhclient
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-devel
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhclient
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-devel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhclient
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-devel
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhclient
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3
dhcp-devel
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 7:3.0.1-10.2_EL3
7:3.0.1-10.2_EL3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBISC DHCP dhclient < 3.1.2p1 - Remote Buffer Overflow (PoC)2009-07-27

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0692 is a high vulnerability (CVSS 10.0) in Isc Dhcp, published July 14, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 25.8%, the 97th percentile. Fixed in dhcp3 3.0.4-13+etch2.

References

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