Denial of service in Junos OS jdhcpd

1) Input validation error

EUVDB-ID: #VU59586

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-22163

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the Juniper DHCP daemon (jdhcpd). A remote attacker on the local network can pass specially crafted packets to the jdhcpd daemon and crash it.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1F - 21.2R1

CPE2.3

• cpe:2.3:o:juniper_networks:juniper_junos_os:15.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:18.4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:19.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:19.2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:19.4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:20.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:20.2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:20.3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:20.4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.1:*:*:*:*:*:*:*

External links

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11271&cat=SIRT_1&actp=LIST

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.