Vulnerability identifier: #VU10790

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5732

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
DHCP
Server applications / Other server solutions

Vendor: ISC

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the dhclient due to buffer overflow. A remote attacker can send specially crafted response, trigger memory corruption and cause the service to crash.

Mitigation
Update to versions 4.1-ESV-R15-P1, 4.3.6-P1 or 4.4.1.

Vulnerable software versions

DHCP: 4.1.0, 4.2.0, 4.3.0, 4.4.0

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External links
http://kb.isc.org/article/AA-01565/75/CVE-2018-5732

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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.