Vulnerability identifier: #VU82114

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-2023-44192

CWE-ID: CWE-20

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation error in the Packet Forwarding Engine when pseudo-VTEP (Virtual Tunnel End Point) is configured under EVPN-VXLAN scenario. A remote non-authenticated attacker can perform a denial of service (DoS) attack.

The vulnerability affects all QFX5000 series platforms.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 22.3R1 - 22.3R2, 21.2R1 - 21.2R3-S4, 22.4R1 - 22.4R1-S1, 22.1R1 - 22.1R3-S1, 21.4R1 - 21.4R3-S2, 21.1 - 21.1R3-S4, 22.2R1 - 22.2R2-S1, 21.3R1 - 21.3R3-S3, 20.4 - 20.4R3-S5

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External links
http://supportportal.juniper.net/s/article/2023-10-Security-Bulletin-Junos-OS-QFX5000-Series-DMA-memory-leak-is-observed-when-specific-DHCP-packets-are-transmitted-over-pseudo-VTEP-CVE-2023-44192

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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.