Vulnerability in Juniper Junos OS Evolved
CVE-2021-0225
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Juniper Junos OS Evolved — versions 19.1, 19.2, 19.3
- Juniper Networks Junos OS Evolved — versions 19.1R1-EVO, 20.3-EVO
Weakness classification (CWE)
References
- kb.juniper.net/JSA11120 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-0225?
- CVE-2021-0225 is a medium-severity vulnerability in Juniper Junos OS Evolved, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.8/10. Published 2021-04-22.
- How severe is CVE-2021-0225?
- Medium severity. CVSS v3 base score is 5.8 out of 10.