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CVE-2012-3571

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a...

6.1 MediumPublic exploitFix available

CVE-2012-3571 is a medium vulnerability (CVSS 6.1) in Isc Dhcp, published July 25, 2012. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 13.0%, the 96th percentile. Fixed in isc-dhcp 4.2.4-2.

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Exploit likelihood

13.0%Down 1.3 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 6.1

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Record
CVE-2012-3571
CVSS 2.0
6.1 MediumAV:A/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Record
CVE-2012-3571
Updated
2026-11-02
EUVDEUVD-2012-3518 No score

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Record
EUVD-2012-3518
Updated
2026-11-03
GitHub AdvisoriesGHSA-2fx4-27pj-8f74 No score

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a...

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Record
GHSA-2fx4-27pj-8f74
Weakness
CWE-119
Updated
2026-11-02
OSV No score

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Record
CVE-2012-3571
Updated
2026-11-02
OSVDEBIAN-CVE-2012-3571 No score

ISC DHCP 4.1.2 through 4.2.4 and 4.1-ESV before 4.1-ESV-R6 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed client identifier.

Record
DEBIAN-CVE-2012-3571
Updated
2026-11-02
OSVopenSUSE-SU-2024:10358-1 No score

dhcp-4.3.3.P1-3.1 on GA media

These are all security issues fixed in the dhcp-4.3.3.P1-3.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10358-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
isc-dhcp
Debian:12
 before 4.2.4-2
4.2.4-2
isc-dhcp
Debian:13
 before 4.2.4-2
4.2.4-2
isc-dhcp
Debian:6.0
 before 4.1.1-P1-15+squeeze4, plus listed versions
4.1.1-P1-154.1.1-P1-15+squeeze14.1.1-P1-15+squeeze24.1.1-P1-15+squeeze3
4.1.1-P1-15+squeeze4
isc-dhcp
Debian:6.0
 before 4.1.1-P1-15+squeeze5, plus listed versions
4.1.1-P1-154.1.1-P1-15+squeeze14.1.1-P1-15+squeeze24.1.1-P1-15+squeeze34.1.1-P1-15+squeeze4
4.1.1-P1-15+squeeze5
isc-dhcp
Debian:6.0
 before 4.1.1-P1-15+squeeze6, plus listed versions
4.1.1-P1-154.1.1-P1-15+squeeze14.1.1-P1-15+squeeze24.1.1-P1-15+squeeze34.1.1-P1-15+squeeze44.1.1-P1-15+squeeze5
4.1.1-P1-15+squeeze6
dhclient
Red Hat:enterprise_linux:5::client
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp
Red Hat:enterprise_linux:5::client
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp-debuginfo
Red Hat:enterprise_linux:5::client
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
libdhcp4client
Red Hat:enterprise_linux:5::client
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp
Red Hat:enterprise_linux:5::client_workstation
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
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Affected packages
PackageAffectedFixed
dhcp-debuginfo
Red Hat:enterprise_linux:5::client_workstation
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp-devel
Red Hat:enterprise_linux:5::client_workstation
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
libdhcp4client-devel
Red Hat:enterprise_linux:5::client_workstation
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhclient
Red Hat:enterprise_linux:5::server
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp
Red Hat:enterprise_linux:5::server
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp-debuginfo
Red Hat:enterprise_linux:5::server
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhcp-devel
Red Hat:enterprise_linux:5::server
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
libdhcp4client
Red Hat:enterprise_linux:5::server
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
libdhcp4client-devel
Red Hat:enterprise_linux:5::server
 before 12:3.0.5-31.el5_8.1
12:3.0.5-31.el5_8.1
dhclient
Red Hat:enterprise_linux:6::client
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp
Red Hat:enterprise_linux:6::client
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-common
Red Hat:enterprise_linux:6::client
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-debuginfo
Red Hat:enterprise_linux:6::client
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-devel
Red Hat:enterprise_linux:6::client
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhclient
Red Hat:enterprise_linux:6::computenode
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp
Red Hat:enterprise_linux:6::computenode
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-common
Red Hat:enterprise_linux:6::computenode
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-devel
Red Hat:enterprise_linux:6::computenode
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhclient
Red Hat:enterprise_linux:6::server
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp
Red Hat:enterprise_linux:6::server
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-common
Red Hat:enterprise_linux:6::server
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-debuginfo
Red Hat:enterprise_linux:6::server
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-devel
Red Hat:enterprise_linux:6::server
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhclient
Red Hat:enterprise_linux:6::workstation
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp
Red Hat:enterprise_linux:6::workstation
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-common
Red Hat:enterprise_linux:6::workstation
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp-devel
Red Hat:enterprise_linux:6::workstation
 before 12:4.1.1-31.P1.el6_3.1
12:4.1.1-31.P1.el6_3.1
dhcp
openSUSE:Tumbleweed
 before 4.3.3.P1-3.1
4.3.3.P1-3.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBISC DHCP 4.x - Multiple Denial of Service Vulnerabilities2012-07-25

History

History
WhenChangedSources
2026-11-03aliasesEUVD
2026-11-02createdCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

References

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