A critical vulnerability has been discovered in the Junos operating system. The vulnerability was caused by the ICAP (Internet Content Adaptation Protocol) protocol, and attackers can exploit DoS and RCE attacks by exploiting the vulnerability there.
The vulnerable versions of Junos are as follows
18.1 versions prior to 8.1R3-S9
18.2R2-S7, 18.2 versions before 18.2R3-S3
18.3R1-S7, 18.3R2-S4, 18.3 versions before 18.3R3-S1
18.4R1-S7, 18.4R2-S4, 18.4 versions before 18.4R3
19.1R1-S5, 19.1 versions before 19.1R2
19.2R1-S2, 19.2 versions before 19.2R2
19.3 releases before 19.3R2
Junos OSs before 18.1R1 will not affect
The measures that can be taken are as follows
Closing the ICAP protocol.
18.1R3-S9, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R2-S4, 18.3R3-S1, 18.4R1-S7, 18.4R2 -S4, 18.4R3, 19.1R1-S5, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R2, 19.4R1 or upgrade to later versions.
Update links: https://support.juniper.net/support/downloads/