Vulnerability identifier: #VU68361

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-2022-22238

CWE-ID: CWE-755

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 improper handling of errors in the routing protocol daemon (rpd) when processing incoming RESV message corresponding to a protected LSP. A remote attacker can send specially crafted RESV messages to the affected device and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 20.2 - 20.2R3-S2-EVO, 21.3-EVO - 21.3R1-S1-EVO, 20.4 - 20.4R3-EVO, 20.4R2-S2-EVO

Juniper Junos OS: 19.4 - 19.4R3-S7, 19.4R1 - 19.4R1-S4, 21.2R1 - 21.2R1-S1, 20.3 - 20.3R3-S1, 21.3R1 - 21.3R1-S2, 20.4 - 20.4R3, 21.1 - 21.1R2-S2, 20.2 - 20.2R3-S2, 20.1 - 20.1R3-S1

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External links
http://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-The-rpd-process-will-crash-when-a-malformed-incoming-RESV-message-is-processed-CVE-2022-22238

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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.