Vulnerability identifier: #VU82477

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-2023-22401

CWE-ID: CWE-129

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Junos OS Evolved
Operating systems & Components / Operating system
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 validation of array index error in the Advanced Forwarding Toolkit Manager daemon (aftmand). A remote non-authenticated attacker can cause a Denial of Service (DoS).

 On the PTX10008 and PTX10016 platforms running Junos OS or Junos OS Evolved, when a specific SNMP MIB is queried this will cause a PFE crash and the FPC will go offline and not automatically recover.

A system restart is required to get the affected FPC in an operational state again.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 22.2-EVO - 22.2R1-EVO, 21.4R1-EVO - 21.4R2-EVO, 22.1-EVO - 22.1R2-S1-EVO

Juniper Junos OS: 22.2R1 - 22.2R1-S2, 22.1R1 - 22.1R2-S2

---

External links
http://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-PTX10008-PTX10016-When-a-specific-SNMP-MIB-is-queried-the-FPC-will-crash-CVE-2023-22401

---

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.