Vulnerability in Juniper Junos OS Evolved
CVE-2021-0226
On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS releases.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Juniper Junos OS Evolved — versions 20.1, 20.2, 20.3
- Juniper Networks Junos OS Evolved — versions 19.4-EVO, 20.1-EVO, 20.2-EVO
Weakness classification (CWE)
References
- kb.juniper.net/JSA11121 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-0226?
- CVE-2021-0226 is a high-severity vulnerability in Juniper Junos OS Evolved, classified under Improper Initialization. CVSS score: 7.1/10. Published 2021-04-22.
- How severe is CVE-2021-0226?
- High severity. CVSS v3 base score is 7.1 out of 10.