Operation on a resource after expiration or release in Junos OS Evolved and Juniper Junos OS

1) Operation on a resource after expiration or release

EUVDB-ID: #VU82467

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-2022-22197

CWE-ID: CWE-672 - Operation on a Resource after Expiration or Release

Exploit availability: No

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: 20.1 - 20.4

Juniper Junos OS: 17.3 - 20.4

External links

http://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

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.