#VU88438 Improper check for unusual or exceptional conditions in Junos OS Evolved and Juniper Junos OS


Published: 2024-04-10

Vulnerability identifier: #VU88438

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-2024-30409

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Junos OS Evolved
Operating systems & Components / Operating system
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 >an improper check for unusual or exceptional conditions error in the Layer 2 Address Learning Daemon (l2ald). A remote non-authenticated attacker can cause the forwarding information base telemetry daemon (fibtd) to crash, leading to a limited Denial of Service.


Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 22.1-EVO - 22.1R1-S1-EVO, 22.2-EVO

Juniper Junos OS: 22.4R1-S1 - 22.4R1-S2, 22.3R1-S1 - 22.3R1-S2, 22.1R1 - 22.1R1-S1


External links
http://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Higher-CPU-consumption-on-routing-engine-leads-to-Denial-of-Service-DoS-CVE-2024-30409


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.


Latest bulletins with this vulnerability