Denial of service in Junos OS and Junos OS Evolved

1) Input validation error

EUVDB-ID: #VU82509

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-2022-22214

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the Packet Forwarding Engine (PFE). A remote attacker on the local network can send specially crafted transit IPv6 packet over MPLS and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.4 - 22.1-EVO

Juniper Junos OS: 12.3 - 21.1R1-S1

External links

http://supportportal.juniper.net/s/article/2022-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-an-MPLS-scenario-upon-receipt-of-a-specific-IPv6-packet-an-FPC-will-crash-CVE-2022-22214

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.