Out-of-bounds read in Junos OS Evolved and Juniper Junos OS

1) Out-of-bounds read

EUVDB-ID: #VU98397

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-2024-39516

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

An Out-of-Bounds Read vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS).

Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 21.4R1-EVO - 22.2R3-S4-EVO

Juniper Junos OS: 21.4R1-S1 - 22.2R3-S4.11

CPE2.3

• cpe:2.3:o:juniper_networks:junos_os_evolved:21.4R3-S7-EVO:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:junos_os_evolved:22.2R3-S4-EVO:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.4R3-S7.9:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:22.2R3-S4.11:*:*:*:*:*:*:*

External links

https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Junos-OS-and-Junos-OS-Evolved-Receipt-of-a-specifically-malformed-BGP-packet-causes-RPD-crash-when-segment-routing-is-enabled-CVE-2024-39516

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.