CVE-2021-0226
moderate-risk
Published 2021-04-22
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.
Do I need to act?
-
0.54% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.1/10
High
ADJACENT_NETWORK
/ LOW complexity
Affected Products (10)
Affected Vendors
References (2)
Vendor Advisory
https://kb.juniper.net/JSA11121
Vendor Advisory
https://kb.juniper.net/JSA11121
40
/ 100
moderate-risk
Severity
22/34 · High
Exploitability
2/34 · Minimal
Exposure
16/34 · Moderate