Vulnerability identifier: #VU82509

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-2022-22214

CWE-ID: CWE-20

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 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: 21.3-EVO - 21.3R2-EVO, 20.4 - 20.4R3-S2-EVO, 20.4R2-S2-EVO, 22.1-EVO, 21.4R1-EVO - 21.4R1-S2-EVO, 21.2-EVO - 21.2R2-S2-EVO

Juniper Junos OS: 12.3 - 12.3R12-S20, 19.1 - 19.1R2-S2, 19.1R1-S4, 19.3 - 19.3R1, 19.3R1-S1, 19.3R2 - 19.3R2-S6, 18.3 - 18.3R3-S5, 18.3R2-S3, 18.3R3-S1, 20.4 - 20.4R2-S1, 19.2 - 19.2R1-S6, 19.2R1-S4, 19.4 - 19.4R3-S4, 19.4R1 - 19.4R1-S4, 21.1 - 21.1R1-S1, 20.2 - 20.2R3-S1, 18.4 - 18.4R2-S8, 18.4R1-S5, 18.4R2-S3, 15.1 - 15.1R7-S9, 15.1F - 15.1F7-S2, 20.3 - 20.3R2-S1, 17.3 - 17.3R3-S11, 20.1 - 20.1R2-S2

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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

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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.