CVE-2012-6700

high

Published 2016-04-11 · Modified 2026-05-06

CVSS v3

7.5

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2

5.0

VIR risk

7.5

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.

Predictions

Exploit likelihood

83%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-6700

OS impact

OS	Version	Status	Fixed in
debian	forky	fixed	`1:10.0.1-1`
debian	sid	fixed	`1:10.0.1-1`
debian	trixie	fixed	`1:10.0.1-1`
debian	7.0	affected

Application impact

Vendor	Product	Versions
dhcpcd_project	dhcpcd	`3.1.9`
dhcpcd_project	dhcpcd	`3.2.0`
dhcpcd_project	dhcpcd	`3.2.1`
dhcpcd_project	dhcpcd	`3.2.2`
dhcpcd_project	dhcpcd	`3.2.3`

References

http://www.debian.org/security/2016/dsa-3534
http://www.openwall.com/lists/oss-security/2015/12/02/1
http://www.openwall.com/lists/oss-security/2015/12/03/1
https://bugs.launchpad.net/ubuntu/+source/dhcpcd/+bug/1517226
https://launchpadlibrarian.net/228152582/dhcp.c.patch
https://security-tracker.debian.org/tracker/CVE-2012-6700

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.