CVE-2012-6700

Publication date 11 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The decode_search function in dhcp.c in dhcpcd 3.x does not properly free allocated memory, which allows remote DHCP servers to cause a denial of service via a crafted response.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
dhcpcd	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	15.10 wily	Not in release
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Fixed 3.2.3-11+deb7u1build0.14.04.1
	12.04 LTS precise	Ignored end of life

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

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

MITRE
NVD
Launchpad
Debian

Other references

https://launchpadlibrarian.net/228152582/dhcp.c.patch
https://bugs.launchpad.net/ubuntu/+source/dhcpcd/+bug/1517226
https://www.cve.org/CVERecord?id=CVE-2012-6700