Vulnerability identifier: #VU59567

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-2022-22169

CWE-ID: CWE-665

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system
Junos OS Evolved
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 initialization in the routing protocol daemon (rpd) . A remote attacker can send specific packets in certain orders and at specific timings to force OSPFv3 to unexpectedly enter graceful-restart (GR helper mode) even though there is not any Grace-LSA received in OSPFv3 causing a Denial of Service (DoS)

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1 - 15.1R7-S10, 15.1F - 15.1F7-S2, 19.2 - 19.2R3-S3, 19.2R1-S4, 18.4 - 18.4R3-S9, 18.4R1-S5, 18.4R2-S3, 21.1 - 21.1R2-S2, 19.1 - 19.1R3-S6, 19.1R1-S4, 20.2 - 20.2R3-S2, 19.4 - 19.4R3-S5, 19.4R1 - 19.4R1-S4, 19.3 - 19.3R3-S3, 19.3R1-S1, 19.3R2 - 19.3R2-S6, 18.3 - 18.3R3-S5, 18.3R2-S3, 18.3R3-S1, 20.3 - 20.3R3, 21.2R1 - 21.2R1-S2, 20.4 - 20.4R2-S1, 20.1 - 20.1R3

Junos OS Evolved: 21.2-EVO - 21.2R1-S2-EVO, 21.3-EVO

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External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11276&cat=SIRT_1&actp=LIST

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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.