Vulnerability identifier: #VU59586

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22163

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

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: 15.1 - 15.1R7-S10, 15.1F - 15.1F7-S2, 19.2 - 19.2R3-S2, 19.2R1-S4, 21.1 - 21.1R2-S2, 19.1 - 19.1R3-S6, 19.1R1-S4, 20.3 - 20.3R3, 21.2R1 - 21.2R1-S2, 20.1 - 20.1R3, 19.4 - 19.4R3-S4, 19.4R1 - 19.4R1-S4, 20.4 - 20.4R2-S2, 20.2 - 20.2R3-S1, 18.4 - 18.4R3-S8, 18.4R1-S5, 18.4R2-S3

---

External links
http://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.