Vulnerability identifier: #VU82485

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-2023-22413

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 non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper check or handling of exceptional conditions error in the IPsec library. A remote non-authenticated attacker can cause Denial of Service (DoS).

 On all MX platforms with MS-MPC or MS-MIC card, when specific IPv4 packets are processed by an IPsec6 tunnel, the Multiservices PIC Management Daemon (mspmand) process will core and restart.

This will lead to FPC crash.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 20.3 - 20.3R3-S4, 21.4R1 - 21.4R2-S2, 19.4 - 19.4R3-S8, 19.4R1 - 19.4R1-S4, 21.1 - 21.1R3-S2, 22.1R1 - 22.1R1-S2, 21.2R1 - 21.2R3, 20.4 - 20.4R3-S3, 20.2 - 20.2R3-S4, 21.3R1 - 21.3R2-S2

---

External links
http://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-MX-Series-FPC-crash-when-an-IPsec6-tunnel-processes-specific-IPv4-packets-CVE-2023-22413

---

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.