PT-2021-2121 · Juniper Networks · Junos
Published
2021-01-13
·
Updated
2021-02-05
·
CVE-2021-0221
CVSS v3.1
6.5
Medium
| Vector | AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Junos OS versions prior to 17.3R3-S10
Junos OS versions 17.4 prior to 17.4R2-S12, 17.4R3-S3
Junos OS versions 18.1 prior to 18.1R3-S11
Junos OS versions 18.2 prior to 18.2R3-S6
Junos OS versions 18.3 prior to 18.3R3-S4
Junos OS versions 18.4 prior to 18.4R2-S5, 18.4R3-S5
Junos OS versions 19.1 prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3
Junos OS versions 19.2 prior to 19.2R1-S5, 19.2R3-S1
Junos OS versions 19.3 prior to 19.3R2-S5, 19.3R3
Junos OS versions 19.4 prior to 19.4R2-S2, 19.4R3
Junos OS versions 20.1 prior to 20.1R2
Junos OS versions 20.2 prior to 20.2R1-S2, 20.2R2
Description
In an EVPN/VXLAN scenario, if an IRB interface with a virtual gateway address (VGA) is configured on a PE, a traffic loop may occur upon receipt of specific IP multicast traffic. The traffic loop will cause interface traffic to increase abnormally, ultimately leading to a Denial of Service (DoS) in packet processing. This issue can be monitored using the command
user@junos> monitor interface traffic. The issue affects Juniper Networks Junos OS on QFX Series.Recommendations
For Junos OS versions prior to 17.3R3-S10, update to version 17.3R3-S10 or later.
For Junos OS versions 17.4 prior to 17.4R2-S12, 17.4R3-S3, update to version 17.4R2-S12 or 17.4R3-S3 or later.
For Junos OS versions 18.1 prior to 18.1R3-S11, update to version 18.1R3-S11 or later.
For Junos OS versions 18.2 prior to 18.2R3-S6, update to version 18.2R3-S6 or later.
For Junos OS versions 18.3 prior to 18.3R3-S4, update to version 18.3R3-S4 or later.
For Junos OS versions 18.4 prior to 18.4R2-S5, 18.4R3-S5, update to version 18.4R2-S5 or 18.4R3-S5 or later.
For Junos OS versions 19.1 prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, update to version 19.1R1-S6 or 19.1R2-S2 or 19.1R3-S3 or later.
For Junos OS versions 19.2 prior to 19.2R1-S5, 19.2R3-S1, update to version 19.2R1-S5 or 19.2R3-S1 or later.
For Junos OS versions 19.3 prior to 19.3R2-S5, 19.3R3, update to version 19.3R2-S5 or 19.3R3 or later.
For Junos OS versions 19.4 prior to 19.4R2-S2, 19.4R3, update to version 19.4R2-S2 or 19.4R3 or later.
For Junos OS versions 20.1 prior to 20.1R2, update to version 20.1R2 or later.
For Junos OS versions 20.2 prior to 20.2R1-S2, 20.2R2, update to version 20.2R1-S2 or 20.2R2 or later.
Fix
DoS
Infinite Loop
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Junos