Description
A Protection Mechanism Failure vulnerability in RPD (routing protocol daemon) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause established IS-IS adjacencies to go down by sending a spoofed hello PDU leading to a Denial of Service (DoS) condition. Continued receipted of these spoofed PDUs will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS All versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R3-S3; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R2-EVO; 21.1 versions prior to 21.1R2-EVO.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | unspecified – < 18.2R3-S8, 18.3 – < 18.3R3-S5, 18.4 – < 18.4R3-S9, 19.1 – < 19.1R3-S7, 19.2 – < 19.2R1-S7, 19.2R3-S3, 19.3 – < 19.3R2-S6, 19.3R3-S2, 19.4 – < 19.4R3-S3, 20.1 – < 20.1R3, 20.2 – < 20.2R3, 20.3 – < 20.3R3, 20.4 – < 20.4R2 | 18.2R3-S8 |
| Juniper Networks | Junos OS Evolved | unspecified – < 20.4R2-EVO, 21.1 – < 21.1R2-EVO | 20.4R2-EVO |