#VU82467 Operation on a resource after expiration or release in Junos OS Evolved and Juniper Junos OS - CVE-2022-22197

Vulnerability identifier: #VU82467

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/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-2022-22197

CWE-ID: CWE-672

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 operation on a resource after expiration or release error in the Routing Protocol Daemon (RPD). A remote non-authenticated attacker can cause a Denial of Service (DoS).

This issue occurs when proxy-generate route-target filtering is enabled, and certain proxy-route add and delete events are happening.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.1R1-EVO - 20.1, 20.2R1-EVO - 20.2, 20.3-EVO - 20.3, 20.4

Juniper Junos OS: 17.3R1-S1 - 17.3, 17.4R1-S1 - 17.4, 18.3R1-S1 - 18.3, 18.4R1-S1 - 18.4, 19.1R - 19.1, 19.2R1-S1 - 19.2, 19.3R1-S1 - 19.3, 19.4R1-S1 - 19.4, 20.1R1-S1 - 20.1, 20.2R1-S1 - 20.2, 20.3R1-S1 - 20.3, 20.4

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External links
https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-An-rpd-core-will-be-observed-with-proxy-BGP-route-target-filtering-enabled-and-certain-route-add-and-delete-event-happening-CVE-2022-22197

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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.