Denial of service in Junos OS FPC

1) Improper control of a resource through its lifetime

EUVDB-ID: #VU68278

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22249

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect control over memory operations in the Packet Forwarding Engine (PFE). A remote attacker on the local network can cause one or more FPCs to crash and reboot, resulting in a denial of service (DoS) condition.

The vulnerability affects Juniper Networks Junos OS on MX Series.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1 - 21.3R1-S2

External links

http://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-MX-Series-An-FPC-crash-might-be-seen-due-to-mac-moves-within-the-same-bridge-domain-CVE-2022-22249

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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