An Incorrect Permission Assignment for Critical Resource vulnerability of a certain file in the filesystem of Junos OS allows a local authenticated attacker to cause routing process daemon (RPD) to crash and restart, causing a Denial of Service (DoS). Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S9.

17.3 versions prior to 17.3R3-S12.

17.4 versions prior to 17.4R2-S13, 17.4R3-S5.

18.1 versions prior to 18.1R3-S13.

18.2 versions prior to 18.2R3-S8.

18.3 versions prior to 18.3R3-S5.

18.4 versions prior to 18.4R2-S8, 18.4R3-S7.

19.1 versions prior to 19.1R2-S3, 19.1R3-S5.

19.2 versions prior to 19.2R3-S2.

19.3 versions prior to 19.3R2-S6, 19.3R3-S2.

19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2.

20.1 versions prior to 20.1R2-S2, 20.1R3.

20.2 versions prior to 20.2R2-S3, 20.2R3.

20.3 versions prior to 20.3R3.

20.4 versions prior to 20.4R1-S1, 20.4R2.