SB2024011068 - Allocation of resources without limits or throttling in Junos OS Evolved

Security Bulletin ID SB2024011068

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Allocation of resources without limits or throttling (CVE-ID: CVE-2024-21604)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-Evolved-A-high-rate-of-specific-traffic-will-cause-a-complete-system-outage-CVE-2024-21604