Missing release of memory after effective lifetime in Juniper Junos OS

Published: 2024-04-11

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2024-21609
CWE-ID	CWE-401
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	Juniper Junos OS Operating systems & Components / Operating system
Vendor	Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Missing release of memory after effective lifetime

EUVDB-ID: #VU88459

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-21609

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

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 missing release of memory after effective lifetime error in the IKE daemon (iked). A remote non-authenticated attacker can successfully establish IPsec tunnels to cause a Denial of Service (DoS).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 20.4R1 - 23.4R1-S1

External links

http://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-and-SRX-Series-If-specific-IPsec-parameters-are-negotiated-iked-will-crash-due-to-a-memory-leak-CVE-2024-21609

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.