Debian DSA-2551-1 : isc-dhcp - denial of service

High Nessus Plugin ID 62225


The remote Debian host is missing a security-related update.


Glen Eustace discovered that the ISC DHCP server, a server for automatic IP address assignment, is not properly handling changes in the expiration times of a lease. An attacker may use this flaw to crash the service and cause denial of service conditions, by reducing the expiration time of an active IPv6 lease.


Upgrade the isc-dhcp packages.

For the stable distribution (squeeze), this problem has been fixed in version 4.1.1-P1-15+squeeze8.

See Also

Plugin Details

Severity: High

ID: 62225

File Name: debian_DSA-2551.nasl

Version: 1.13

Type: local

Agent: unix

Published: 2012/09/24

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:isc-dhcp, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/09/23

Reference Information

CVE: CVE-2012-3955

BID: 55530

DSA: 2551