Vulnerability identifier: #VU82453

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22193

CWE-ID: CWE-241

Exploitation vector: Local

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 local authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of unexpected data type error in the Routing Protocol Daemon (rpd). A local authenticated user can cause a Denial of Service (DoS).

Continued execution of this command might cause a sustained Denial of Service condition.

 If BGP rib sharding is configured and a certain CLI command is executed the rpd process can crash.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.1 - 21.1R2-EVO, 21.2-EVO - 21.2R1-S2-EVO, 20.4 - 20.4R2-S3-EVO, 20.4R2-S2-EVO, 21.3-EVO

Juniper Junos OS: 21.1 - 21.1R2-S2, 20.3 - 20.3R3, 21.2R1 - 21.2R1-S2, 20.4 - 20.4R2-S2

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External links
http://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-a-BGP-rib-sharding-scenario-when-a-certain-CLI-command-is-executed-the-rpd-process-might-crash-CVE-2022-22193

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.