#VU88441 Stack-based buffer overflow in Junos OS Evolved and Juniper Junos OS - CVE-2024-30394

Vulnerability identifier: #VU88441

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-30394

CWE-ID: CWE-121

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 attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the Routing Protocol Daemon (rpd) when handling EVPN type-5 route. A remote unauthenticated attacker can send specially crafted traffic to the device, trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.4R1-EVO, 21.4R1-S1-EVO, 21.4R1-S2-EVO, 21.4R2-EVO, 21.4R2-S1-EVO, 21.4R2-S2-EVO, 21.4R3-EVO, 21.4R3-S1-EVO, 21.4R3-S2-EVO, 21.4R3-S3-EVO, 21.4R3-S4-EVO, 22.1R1-EVO, 22.1R1-S1-EVO, 22.1R1-S2-EVO, 22.1R2-EVO, 22.1R2-S1-EVO, 22.1R3-EVO, 22.1R3-S1-EVO, 22.1R3-S2-EVO, 22.1R3-S3-EVO, 22.1-EVO, 22.2R1-EVO, 22.2R1-S1-EVO, 22.2R2-EVO, 22.2R2-S1-EVO, 22.2R2-S2-EVO, 22.2R3-EVO, 22.2R3-S1-EVO, 22.2-EVO, 22.3R1-EVO, 22.3R1-S1-EVO, 22.3R1-S2-EVO, 22.3R2-EVO, 22.3R2-S1-EVO, 22.3R2-S2-EVO, 22.3R3-EVO, 22.4R1-EVO, 22.4R1-S1-EVO, 22.4R1-S2-EVO, 22.4R2-EVO, 22.4R2-S1-EVO, 22.4R2-S2-EVO, 23.2R1-EVO, 23.2R1-S1-EVO, 23.2R1-S2-EVO

Juniper Junos OS: 21.2R1-S1, 21.2R1-S2, 21.2R2-S1, 21.2R2-S2, 21.2R3-S1, 21.2R3-S2, 21.2R3-S3, 21.2R3-S4, 21.2R3-S5, 21.2R3-S6, 21.2R1, 21.2R2, 21.4R1-S1, 21.4R1-S2, 21.4R2-S1, 21.4R2-S2, 21.4R3-S1, 21.4R3-S2, 21.4R3-S3, 21.4R3-S4, 21.4R1, 21.4R2, 22.1R1-S1, 22.1R1-S2, 22.1R2-S1, 22.1R2-S2, 22.1R3-S1, 22.1R3-S2, 22.1R3-S3, 22.1R1, 22.1R2, 22.2R1-S1, 22.2R1-S2, 22.2R2-S1, 22.2R2-S2, 22.2R3-S1, 22.2R1, 22.2R2, 22.3R1-S1, 22.3R1-S2, 22.3R2-S1, 22.3R2-S2, 22.3R1, 22.3R2, 22.4R1-S1, 22.4R1-S2, 22.4R2-S1, 22.4R2-S2, 22.4R3-S1, 22.4R1, 22.4R2, 23.2R1-S1, 23.2R1-S2, 23.2R1, 23.4R1-S1

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External links
https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-A-specific-EVPN-type-5-route-causes-rpd-crash-CVE-2024-30394

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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 Internet.

Is there known malware, which exploits this vulnerability?

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