Vulnerability identifier: #VU82504

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-2022-22231

CWE-ID: CWE-690

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 unchecked return value to null pointer dereference error in Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial of Service (DoS).

On SRX Series if Unified Threat Management (UTM) Enhanced Content Filtering (CF) and AntiVirus (AV) are enabled together and the system processes specific valid transit traffic the Packet Forwarding Engine (PFE) will crash and restart.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.4R1 - 21.4R1-S1

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External links
http://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-If-UTM-Enhanced-Content-Filtering-and-AntiVirus-are-enabled-and-specific-traffic-is-processed-the-PFE-will-crash-CVE-2022-22231

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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.