Input validation error in ISC Dhcp

1) Input validation error

EUVDB-ID: #VU33982

Risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C]

CVE-ID: CVE-2010-2156

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

ISC DHCP 4.1 before 4.1.1-P1 and 4.0 before 4.0.2-P1 allows remote attackers to cause a denial of service (server exit) via a zero-length client ID.

Mitigation

Install update from vendor's website.

Vulnerable software versions

DHCP: 4.1-esv - 4.4.1

External links

http://ftp.isc.org/isc/dhcp/dhcp-4.0.2-P1-RELNOTES
http://ftp.isc.org/isc/dhcp/dhcp-4.1.1-P1-RELNOTES
http://lists.fedoraproject.org/pipermail/package-announce/2010-June/042843.html
http://secunia.com/advisories/40116
http://www.exploit-db.com/exploits/14185
http://www.mandriva.com/security/advisories?name=MDVSA-2010:114
http://www.securityfocus.com/bid/40775
http://www.securitytracker.com/id?1024093
http://exchange.xforce.ibmcloud.com/vulnerabilities/59222

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.