Allocation of resources without limits or throttling in Junos OS Evolved - CVE-2024-21604
Published: January 10, 2024
Vulnerability identifier: #VU85273
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2024-21604
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to allocation of resources without limits or throttling error in the kernel. A remote non-authenticated attacker can cause a Denial of Service (DoS).
If a high rate of specific valid packets are processed by the routing engine (RE) this will lead to a loss of connectivity of the RE with other components of the chassis and thereby a complete and persistent system outage.
Please note that a carefully designed lo0 firewall filter will block or limit these packets which should prevent this issue from occurring.
Affected software
Junos OS Evolved
How to mitigate CVE-2024-21604
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 20.4R3-S7-EVO, 21.4R3-S5-EVO, 22.1R3-S2-EVO, 22.2R3-EVO, 22.3R2-EVO, 22.4R2-EVO, 23.2R1-EVO