Due to a vulnerability in DDoS protection in Juniper Networks Junos OS and Junos OS Evolved on QFX5K Series switches in a VXLAN configuration, instability might be experienced in the underlay network as a consequence of exceeding the default ddos-protection aggregate threshold. If an attacker on a client device on the overlay network sends a high volume of specific, legitimate traffic in the overlay network, due to an improperly detected DDoS violation, the leaf might not process certain L2 traffic, sent by spines in the underlay network. Continued receipt and processing of the high volume traffic will sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on QFX5K Series: 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R2-S8, 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R1-S2, 20.3R2. Juniper Networks Junos OS Evolved on QFX5220: All versions prior to 20.3R2-EVO.
References
| Link | Resource |
|---|---|
| https://kb.juniper.net/JSA11150 | Vendor Advisory |
| https://kb.juniper.net/JSA11150 | Vendor Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
21 Nov 2024, 05:42
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://kb.juniper.net/JSA11150 - Vendor Advisory |
Information
Published : 2021-04-22 20:15
Updated : 2024-11-21 05:42
NVD link : CVE-2021-0259
Mitre link : CVE-2021-0259
CVE.ORG link : CVE-2021-0259
JSON object : View
Products Affected
juniper
- qfx5210
- qfx5120
- qfx5220
- qfx5130
- qfx5200
- junos
- qfx5110
- qfx5100
- junos_os_evolved
CWE
CWE-755
Improper Handling of Exceptional Conditions