Improper handling of exceptional conditions in Junos OS Evolved and Juniper Junos OS

Published: 2024-01-10

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2024-21585
CWE-ID	CWE-755
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Junos OS Evolved Operating systems & Components / Operating system Juniper Junos OS Operating systems & Components / Operating system
Vendor	Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper handling of exceptional conditions

EUVDB-ID: #VU85274

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-21585

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

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 exceptional conditions error in BGP session processing. A remote non-authenticated attacker can flap BGP sessions and cause the routing protocol daemon (rpd) process to crash and restart, leading to a Denial of Service (DoS) condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.3-EVO - 23.2R1-EVO

Juniper Junos OS: 20.4R1 - 23.1R1-S1

External links

http://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-rpd-process-crash-due-to-BGP-flap-on-NSR-enabled-devices-CVE-2024-21585

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.