#VU94340 Buffer overflow in Juniper Junos OS and Junos OS Evolved - CVE-2024-39543

Vulnerability identifier: #VU94340

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-39543

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system
Junos OS Evolved
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

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

The vulnerability exists due to a boundary error in the routing protocol daemon (rpd). A remote attacker on the local network can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.2R1-S1 - 21.2R3, 21.4R1-S1 - 21.4R3, 22.2R1-S1 - 22.2R3, 22.3R1-S1 - 22.3R3, 22.4R1-S1 - 22.4R3, 23.2R1-S1 - 23.2R2, 23.4R1-S1 - 23.4R1

Junos OS Evolved: 21.2-EVO - 21.2R3-S7-EVO, 21.4R1-EVO - 21.4R3-S7-EVO, 22.2-EVO - 22.2R3-S3-EVO, 22.3R1-EVO - 22.3R3-S2-EVO, 22.4R1-EVO - 22.4R3-S1-EVO, 23.2R1-EVO - 23.2R2-EVO, 23.4R1-EVO - 23.4R1-S2-EVO

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External links
https://supportportal.juniper.net/JSA83004

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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