SB2024071549 - Denial of service in Junos OS Evolved PFE

Security Bulletin ID SB2024071549

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 security vulnerability.

1) Improper handling of values (CVE-ID: CVE-2024-39531)

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

The vulnerability exists due to improper handling of values error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).

If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value.

If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2024-07-Security-Bulletin-Junos-OS-Evolved-ACX7000-Series-Protocol-specific-DDoS-configuration-affects-other-protocols-CVE-2024-39531