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CVE-2021-0203

Junos OS: EX and QFX5K Series: Storm Control does not work as expected when Redundant Trunk Group is configured

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 15.1R7-S7, 16.1R7-S8, 17.2R3-S4, 17.3R3-S8, 18.1R3-S10, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

On Juniper Networks EX and QFX5K Series platforms configured with Redundant Trunk Group (RTG), Storm Control profile applied on the RTG interface might not take affect when it reaches the threshold condition. Storm Control enables the device to monitor traffic levels and to drop broadcast, multicast, and unknown unicast packets when a specified traffic level is exceeded, thus preventing packets from proliferating and degrading the LAN. Note: this issue does not affect EX2200, EX3300, EX4200, and EX9200 Series. This issue affects Juniper Networks Junos OS on EX Series and QFX5K Series: 15.1 versions prior to 15.1R7-S7; 16.1 versions prior to 16.1R7-S8; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S8; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R2-S5, 18.4R3-S3; 19.1 versions prior to 19.1R2-S2, 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R2-S1, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Juniper Networks Junos OS

    From 15.1 · fixed in 15.1R7-S7; From 16.1 · fixed in 16.1R7-S8; From 17.2 · fixed in 17.2R3-S4; From 17.3 · fixed in 17.3R3-S8; From 18.1 · fixed in 18.1R3-S10; From 18.2 · fixed in 18.2R3-S5

References 1

kb.juniper.net