Vulnerability identifier: #VU68274

Vulnerability risk: Medium

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-2022-22218

CWE-ID: CWE-703

Exploitation vector: 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 improper error handling when using Certificate Management Protocol Version 2 (CMPv2) auto re-enrollment. A remote attacker can send a malformed response from the Certificate Authority (CA) server and crash the pkid process.

The vulnerability affects Juniper Networks Junos OS on SRX Series.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.3 - 19.3R3-S6, 19.3R1-S1, 19.3R2 - 19.3R2-S7, 19.4 - 19.4R2-S6, 19.4R1 - 19.4R1-S4, 20.4 - 20.4R3-S3, 20.2 - 20.2R3-S4, 19.2 - 19.2R3-S5, 19.2R1-S4, 19.1 - 19.1R3-S8, 19.1R1-S4, 21.4R1 - 21.4R1-S1, 20.3 - 20.3R3-S3, 21.1 - 21.1R3, 21.2R1 - 21.2R2-S2, 21.3R1 - 21.3R1-S2

---

External links
http://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Upon-processing-of-a-genuine-packet-the-pkid-process-will-crash-during-CMPv2-auto-re-enrollment-CVE-2022-22218

---

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.