Improper handling of syntactically invalid structure in Junos OS Evolved

1) Improper handling of syntactically invalid structure

EUVDB-ID: #VU85285

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-2024-21612

CWE-ID: CWE-228 - Improper Handling of Syntactically Invalid Structure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of syntactically invalid structure error in Object Flooding Protocol (OFP) service. A remote non-authenticated attacker can cause a Denial of Service (DoS).

 On all Junos OS Evolved platforms, when specific TCP packets are received on an open OFP port, the OFP crashes leading to a restart of Routine Engine (RE).

Continuous receipt of these specific TCP packets will lead to a sustained Denial of Service (DoS) condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.2-EVO - 22.4R1-S2-EVO

External links

http://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-Evolved-Specific-TCP-traffic-causes-OFP-core-and-restart-of-RE-CVE-2024-21612

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.