Vulnerability identifier: #VU59561

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-2022-22174

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in the processing of inbound IPv6 packets in Juniper Networks Junos OS on QFX5000 Series and EX4600 switches. A remote attacker can send specially crafted traffic to the system and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.2 - 19.2R3-S2, 19.2R1-S4, 21.1 - 21.1R2-S2, 19.1 - 19.1R3-S6, 19.1R1-S4, 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, 20.1 - 20.1R3, 20.4 - 20.4R2-S2, 20.2 - 20.2R3-S1, 18.4 - 18.4R3-S8, 18.4R1-S5, 18.4R2-S3

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External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11280&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.