Home/CVE/The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses
CVE

CVE-2011-4868

The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses

The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.

MEDIUM · CVSS 6.1 EPSS 0.00846
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules3 YARA rules0
▤

Affected Products & Versions

2
isc dhcp<= 4.2.3
isc dhcpall versions
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighDHCP Server Error Failed Loading the CallOut DLL
producthighDHCP Server Loaded the CallOut DLL
producthighDHCP Callout DLL Installation
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:A/AC:L/Au:N/C:N/I:N/A:C
Published to NVD15 Jan 2012 · 03:55 AM
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2024:10358-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://security.gentoo.org/glsa/glsa-201301-06.xml
https://deepthought.isc.org/article/AA-00595
https://kb.isc.org/article/AA-00705
https://www.isc.org/software/dhcp/advisories/cve-2011-4868Vendor Advisory
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