PT-2021-12939 · Juniper Networks · Junos Evolved
Published
2021-04-22
·
Updated
2021-04-27
·
CVE-2021-0225
CVSS v3.1
5.8
Medium
| Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
Name of the Vulnerable Software and Affected Versions:
Juniper Networks Junos OS Evolved versions 19.1R1-EVO through 20.3R1-S1-EVO
Juniper Networks Junos OS Evolved version 20.3R2-EVO
Description:
The issue is caused by an improper check for unusual or exceptional conditions, which may prevent the stateless firewall filter configuration from taking effect when using the action 'policer' in certain combinations with other options. An administrator can identify failures with filter configuration using the CLI command
show log kfirewall-agent.log | match ERROR, which may display an error message indicating that the filter is not supported.Recommendations:
For Juniper Networks Junos OS Evolved versions 19.1R1-EVO through 20.3R1-S1-EVO, update to version 20.3R1-S2-EVO or later.
For Juniper Networks Junos OS Evolved version 20.3R2-EVO, update to a version that includes the fix for this issue.
As a temporary workaround, consider reviewing and adjusting the stateless firewall filter configuration to avoid using the action 'policer' in combinations that may cause the issue.
Fix
Improper Check for Exceptional Conditions
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Weakness Enumeration
Related Identifiers
Affected Products
Junos Evolved