Incomplete cleanup in Juniper Junos OS

1) Incomplete cleanup

EUVDB-ID: #VU85272

Risk: Medium

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:Green]

CVE-ID: CVE-2024-21617

CWE-ID: CWE-459 - Incomplete cleanup

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 incomplete cleanup error in Nonstop active routing (NSR) component. A remote non-authenticated attacker can cause memory leak leading to Denial of Service (DoS).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.2R1-S1 - 23.2R1-S2

CPE2.3

• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R1-S1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R1-S2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R2-S1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R2-S2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R3-S1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R3-S2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R3-S3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R3-S4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:21.2R2:*:*:*:*:*:*:*

External links

https://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-BGP-flap-on-NSR-enabled-devices-causes-memory-leak-CVE-2024-21617

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.