Description
Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 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, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | 18.4 – < 18.4R1-S8, 18.4R2-S7, 18.4R3-S7, 19.1 – < 19.1R2-S2, 19.1R3-S4, 19.2 – < 19.2R1-S6, 19.2R3-S2, 19.3 – < 19.3R3-S2, 19.4 – < 19.4R2-S4, 19.4R3-S1, 20.1 – < 20.1R2, 20.1R3, 20.1R3-EVO, 20.2 – < 20.2R2, 20.2R3, 20.2R3-EVO, 20.3 – < 20.3R1-S1, 20.3R2, 20.3R2-EVO | 18.4R1-S8, 18.4R2-S7, 18.4R3-S7 |
| Juniper Networks | Junos OS Evolved | 20.3-EVO – < 20.3R2-EVO | 20.3R2-EVO |