#VU33982 Input validation error in DHCP - CVE-2010-2156

Vulnerability identifier: #VU33982

Vulnerability risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2010-2156

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
DHCP
Server applications / Other server solutions

Vendor: ISC

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-R15-P1 - 4.1.2, 4.4.1

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

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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.