An Improper Check for Unusual or Exceptional Conditions vulnerability combined with Improper Handling of Exceptional Conditions in Juniper Networks Junos OS on QFX Series and PTX Series allows an unauthenticated network based attacker to cause increased FPC CPU utilization by sending specific IP packets which are being VXLAN encapsulated leading to a partial Denial of Service (DoS). Continued receipted of these specific traffic will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on QFX Series: All versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 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 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S3, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS on PTX Series: All versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3-S1; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2.
References
Link | Resource |
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https://kb.juniper.net/JSA11223 | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Information
Published : 2021-10-19 12:15
Updated : 2022-10-27 09:34
NVD link : CVE-2021-31361
Mitre link : CVE-2021-31361
JSON object : View
CWE
CWE-754
Improper Check for Unusual or Exceptional Conditions
Products Affected
juniper
- ptx1000
- ptx100016
- qfx5220
- qfx3008-i
- qfx5210
- ptx10001-36mr
- qfx5120
- qfx3000-g
- qfx3600-i
- qfx5100
- ptx10016
- qfx10002-32q
- qfx5200-48y
- qfx3500
- qfx10002-60c
- ptx10003_160c
- qfx10002
- qfx5110
- ptx5000
- ptx10003_81cd
- qfx5200-32c
- qfx3100
- ptx1000-72q
- ptx10003_80c
- ptx10000
- qfx10016
- junos
- ptx3000
- qfx5210-64c
- ptx10008
- qfx10000
- ptx10002-60c
- ptx10004
- qfx10k
- ptx10001
- ptx10003
- qfx10008
- qfx10002-72q
- qfx3000-m
- qfx3600
- qfx5200
- qfx5100-96s
- qfx5130
- ptx10002