SB2025050116 - Improper handling of exceptional conditions in Junos OS Evolved and Juniper Junos OS

Security Bulletin ID SB2025050116

CSH Severity

Low

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Local access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Improper handling of exceptional conditions (CVE-ID: CVE-2025-30652)

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of exceptional conditions error in routing protocol daemon (rpd). A local user can cause a Denial of Service (DoS).

When asregex-optimized is configured and a specific "show route as-path" CLI command is executed, the rpd crashes and restarts.

Repeated execution of this command will cause a sustained DoS condition.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2025-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Executing-a-specific-CLI-command-when-asregex-optimized-is-configured-causes-an-RPD-crash-CVE-2025-30652