Denial of service in Junos OS and Junos OS Evolved rpd

1) Heap-based buffer overflow

EUVDB-ID: #VU85338

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-21596

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

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 can send a specially crafted BGP UPDATE message to the device and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: before 23.2R2

Junos OS Evolved: before 23.2R2-EVO

External links

http://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-A-specific-BGP-UPDATE-message-will-cause-a-crash-in-the-backup-Routing-Engine-CVE-2024-21596

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.