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Last updated: 5/25/2016 4:19:19 AM

CVE Publication rate: 20.5

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Vulnerability Workload Index: 12.31
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National Cyber Awareness System

Vulnerability Summary for CVE-2011-4539

Original release date: 12/08/2011
Last revised: 08/21/2013


dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 MEDIUM
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: BID
Name: 50971
External Source: XF
Name: isc-dhcp-dhcpd-regex-dos(71680)
External Source: FEDORA
Name: FEDORA-2011-16976
External Source: GENTOO
Name: GLSA-201301-06
External Source: CONFIRM
Name: https://www.isc.org/software/dhcp/advisories/cve-2011-4539
Type: Advisory
External Source: MANDRIVA
Name: MDVSA-2011:182
External Source: SUSE
Name: openSUSE-SU-2011:1318
External Source: DEBIAN
Name: DSA-2519
External Source: SECTRACK
Name: 1026393
External Source: FEDORA
Name: FEDORA-2011-16981
External Source: UBUNTU
Name: USN-1309-1

Technical Details

Vulnerability Type (View All)