Vulnerability Monitor

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CVE-2011-4539

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.

Published

2011-12-08T11:55:02.407

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	isc	dhcp	4.0	Yes
Application	isc	dhcp	4.0.0	Yes
Application	isc	dhcp	4.0.1	Yes
Application	isc	dhcp	4.0.1	Yes
Application	isc	dhcp	4.0.1	Yes
Application	isc	dhcp	4.0.2	Yes
Application	isc	dhcp	4.0.2	Yes
Application	isc	dhcp	4.0.2	Yes
Application	isc	dhcp	4.0.2	Yes
Application	isc	dhcp	4.0.2	Yes
Application	isc	dhcp	4.0.3	Yes
Application	isc	dhcp	4.0.3	Yes
Application	isc	dhcp	4.0.3	Yes
Application	isc	dhcp	4.1.1	Yes
Application	isc	dhcp	4.1.1	Yes
Application	isc	dhcp	4.1.2	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.0	Yes
Application	isc	dhcp	4.2.1	Yes
Application	isc	dhcp	4.2.1	Yes
Application	isc	dhcp	4.2.1	Yes
Application	isc	dhcp	4.2.2	Yes
Application	isc	dhcp	4.2.2	Yes
Application	isc	dhcp	4.2.2	Yes
Application	isc	dhcp	4.2.3	Yes
Application	isc	dhcp	4.1-esv	Yes
Application	isc	dhcp	4.1-esv	Yes
Application	isc	dhcp	4.1-esv	Yes
Application	isc	dhcp	4.1-esv	Yes
Application	isc	dhcp	4.1-esv	Yes
Operating System	canonical	ubuntu_linux	11.04	Yes
Operating System	canonical	ubuntu_linux	11.10	Yes
Operating System	debian	debian_linux	6.0	Yes
Operating System	debian	debian_linux	7.0	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html Mailing List, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html Mailing List, Third Party Advisory ([email protected])
http://secunia.com/advisories/47153 Third Party Advisory ([email protected])
http://secunia.com/advisories/47178 Third Party Advisory ([email protected])
http://security.gentoo.org/glsa/glsa-201301-06.xml Third Party Advisory ([email protected])
http://www.debian.org/security/2012/dsa-2519 Third Party Advisory ([email protected])
http://www.mandriva.com/security/advisories?name=MDVSA-2011:182 Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/50971 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id?1026393 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-1309-1 Third Party Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/71680 Third Party Advisory, VDB Entry ([email protected])
https://www.isc.org/software/dhcp/advisories/cve-2011-4539 Vendor Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/47153 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/47178 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-201301-06.xml Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2012/dsa-2519 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:182 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/50971 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1026393 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-1309-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/71680 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.isc.org/software/dhcp/advisories/cve-2011-4539 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)