cbcvebase.
CVE-2021-0228
published 2021-04-22

CVE-2021-0228: An improper check for unusual or exceptional conditions vulnerability in Juniper Networks MX Series platforms with Trio-based MPC (Modular Port Concentrator)…

medium6.5CVSS 3.1
AVAACLPRNUINSUCNINAH
An improper check for unusual or exceptional conditions vulnerability in Juniper Networks MX Series platforms with Trio-based MPC (Modular Port Concentrator) deployed in (Ethernet VPN) EVPN-(Virtual Extensible LAN) VXLAN configuration, may allow an attacker sending specific Layer 2 traffic to cause Distributed Denial of Service (DDoS) protection to trigger unexpectedly, resulting in traffic impact. Continued receipt and processing of this specific Layer 2 frames will sustain the Denial of Service (DoS) condition. An indication of compromise is to check DDOS LACP violations: user@device> show ddos-protection protocols statistics brief | match lacp This issue only affects the MX Series platforms with Trio-based MPC. No other products or platforms are affected. This issue affects: Juniper Networks Junos OS on MX Series: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S8; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2;

Affected

30 ranges· showing 25
VendorProductVersion rangeFixed in
juniperjunos
juniperjunos
juniperjunos
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juniperjunos_os
junipermx_series
juniper_networksjunos_os>= 15.1 < 15.1R7-S915.1R7-S9
juniper_networksjunos_os>= 17.3 < 17.3R3-S1117.3R3-S11
juniper_networksjunos_os>= 17.4 < 17.4R3-S417.4R3-S4
juniper_networksjunos_os>= 18.1 < 18.1R3-S1218.1R3-S12
juniper_networksjunos_os>= 18.2 < 18.2R2-S8, 18.2R3-S818.2R2-S8, 18.2R3-S8
juniper_networksjunos_os>= 18.3 < 18.3R3-S418.3R3-S4
juniper_networksjunos_os>= 18.4 < 18.4R1-S8, 18.4R2-S7, 18.4R3-S718.4R1-S8, 18.4R2-S7, 18.4R3-S7
juniper_networksjunos_os>= 19.1 < 19.1R3-S419.1R3-S4
juniper_networksjunos_os>= 19.2 < 19.2R1-S619.2R1-S6