Denial of service in Junos OS FPC



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-22249
CWE-ID CWE-664
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 Juniper Junos OS
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper control of a resource through its lifetime

EUVDB-ID: #VU68278

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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: 15.1F2-S1 - 21.3R1

CPE2.3 External links

https://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.



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