Vulnerability identifier: #VU82465

Vulnerability risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22186

CWE-ID: CWE-665

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 non-authenticated attacker to read and manipulate data.

Due to an Improper Initialization vulnerability in Juniper Networks Junos OS on EX4650 devices, packets received on the management interface (em0) but not destined to the device, may be improperly forwarded to an egress interface, instead of being discarded.

Such traffic being sent by a client may appear genuine, but is non-standard in nature and should be considered as potentially malicious.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.4R1 - 21.4R1-S2, 21.1 - 21.1R3, 20.2 - 20.2R3-S3, 19.2 - 19.2R3-S4, 19.2R1-S4, 20.4 - 20.4R3-S1, 20.3 - 20.3R3-S2, 19.1 - 19.1R3-S7, 19.1R1-S4, 21.2R1 - 21.2R2-S2, 20.1 - 20.1R3-S2, 19.4 - 19.4R3-S6, 19.4R1 - 19.4R1-S4, 19.3 - 19.3R3-S4, 19.3R1-S1, 19.3R2 - 19.3R2-S7, 21.3R1 - 21.3R1-S2

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External links
http://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Junos-OS-EX4650-Series-Certain-traffic-received-by-the-Junos-OS-device-on-the-management-interface-may-be-forwarded-to-egress-interfaces-instead-of-discarded-CVE-2022-22186

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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.