An Improper Check for Unusual or Exceptional Conditions in Juniper Networks Junos OS Evolved may cause the stateless firewall filter configuration which uses the action 'policer' in certain combinations with other options to not take effect. An administrator can use the following CLI command to see the failures with filter configuration: user@device> show log kfirewall-agent.log | match ERROR Jul 23 14:16:03 ERROR: filter not supported This issue affects Juniper Networks Junos OS Evolved: Versions 19.1R1-EVO and above prior to 20.3R1-S2-EVO, 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 1 product from juniper organizations running these solutions should prioritize assessment and patching.
Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2021-04-22T20:15:08.463
2024-11-21T05:42:14.797
Modified
CVSSv3.1: 5.8 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | junos_os_evolved | 19.1 | Yes |
| Operating System | juniper | junos_os_evolved | 19.1 | Yes |
| Operating System | juniper | junos_os_evolved | 19.2 | Yes |
| Operating System | juniper | junos_os_evolved | 19.2 | Yes |
| Operating System | juniper | junos_os_evolved | 19.3 | Yes |
| Operating System | juniper | junos_os_evolved | 19.3 | Yes |
| Operating System | juniper | junos_os_evolved | 20.1 | Yes |
| Operating System | juniper | junos_os_evolved | 20.1 | Yes |
| Operating System | juniper | junos_os_evolved | 20.2 | Yes |
| Operating System | juniper | junos_os_evolved | 20.2 | Yes |
| Operating System | juniper | junos_os_evolved | 20.3 | Yes |
| Operating System | juniper | junos_os_evolved | 20.3 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.