Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Juniper Networks / Junos OS | affected 17.3 before 17.3R3-S11; affected 17.4 before 17.4R3-S5; affected 18.1 before 18.1R3-S13; affected 18.2 before 18.2R2-S8, 18.2R3-S8; affected 18.3 before 18.3R3-S5; affected 18.4 before 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; affected 19.1 before 19.1R3-S4; affected 19.2 before 19.2R1-S6, 19.2R3-S2; affected 19.3 before 19.3R3-S2; affected 19.4 before 19.4R2-S4, 19.4R3-S1; affected 20.1 before 20.1R2; affected 20.2 before 20.2R2; affected 20.3 before 20.3R1-S2, 20.3R2 |
| Juniper Networks / Junos OS Evolved | affected unspecified before 20.3R2-EVO |
CWE
CWE-755
References
ADP enrichment
No English description supplied.