Vulnerability Details : 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 category: Denial of service
Products affected by CVE-2021-0226
- cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.2:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.1:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos_os_evolved:20.2:r2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-0226
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-0226
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.1
|
HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
2.8
|
4.2
|
Juniper Networks, Inc. |
CWE ids for CVE-2021-0226
-
The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.Assigned by:
- nvd@nist.gov (Primary)
- sirt@juniper.net (Secondary)
References for CVE-2021-0226
-
https://kb.juniper.net/JSA11121
2021-04 Security Bulletin: Junos OS Evolved: The IPv6 BGP session will flap due to receipt of a specific IPv6 packet - Juniper NetworksVendor Advisory
Jump to