CVE-2011-4539

Publication date 8 December 2011

Last updated 24 July 2024

Ubuntu priority

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.

Read the notes from the security team

Status

Show unmaintained releases

No maintained releases are affected by this CVE.

Package	Ubuntu Release	Status
dhcp3	11.10 oneiric	Not in release
	11.04 natty	Not in release
	10.10 maverick	Not affected
	10.04 LTS lucid	Not affected
	8.04 LTS hardy	Not affected
isc-dhcp	11.10 oneiric	Fixed 4.1.1-P1-17ubuntu10.1
	11.04 natty	Fixed 4.1.1-P1-15ubuntu9.3
	10.10 maverick	Not in release
	10.04 LTS lucid	Not in release
	8.04 LTS hardy	Not in release

How can I get the fixes?
What do statuses mean?

Notes

mdeslaur

doesn’t affect v3.x

References

MITRE
NVD
Launchpad
Debian

Related Ubuntu Security Notices (USN)

USN-1309-1
DHCP vulnerability
15 December 2011

Other references

http://www.isc.org/software/dhcp/advisories/cve-2011-4539
https://www.cve.org/CVERecord?id=CVE-2011-4539