#VU107436 Improper encoding or escaping of output in Juniper Junos OS - CVE-2025-30657
Published: April 14, 2025
Vulnerability identifier: #VU107436
Vulnerability risk: Medium
CVSSv4.0: 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
CVE-ID: CVE-2025-30657
CWE-ID: CWE-116
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Juniper Junos OS
Juniper Junos OS
Software vendor:
Juniper Networks, Inc.
Juniper Networks, Inc.
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The vulnerability exists due to improper encoding or escaping of output error in the Sampling Route Record Daemon (SRRD). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).
When a device configured for flow-monitoring receives a specific BGP update message, it is correctly processed internally by the routing protocol daemon (rpd), but when it's sent to SRRD it's encoded incorrectly which leads to a crash and momentary interruption of jflow processing until it automatically restarts.
This issue does not affect traffic forwarding itself.
Remediation
Install updates from vendor's website.