Unchecked input for loop condition in Juniper Junos OS

Published: 2023-01-11

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2023-22409
CWE-ID	CWE-606
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Juniper Junos OS Operating systems & Components / Operating system
Vendor	Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Unchecked input for loop condition

EUVDB-ID: #VU82472

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22409

CWE-ID: CWE-606 - Unchecked Input for Loop Condition

Exploit availability: No

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due to unchecked input for loop condition error in a NAT library. A local authenticated user can cause a Denial of Service (DoS).

When an inconsistent "deterministic NAT" configuration is present on an SRX, or MX with SPC3 and then a specific CLI command is issued the SPC will crash and restart.

Repeated execution of this command will lead to a sustained DoS.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.4 - 22.2R1-S2

CPE2.3

External links

http://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-SRX-Series-MX-Series-with-SPC3-When-an-inconsistent-NAT-configuration-exists-and-a-specific-CLI-command-is-issued-the-SPC-will-reboot-CVE-2023-22409

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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