QID 44021

Juniper Junos is the network operating system used in Juniper Networks hardware systems.

A Use of Uninitialized Resource vulnerability in the Border Gateway Protocol (BGP) software of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to send specific genuine BGP packets to a device configured with BGP to cause a Denial of Service (DoS) by crashing the Routing Protocol Daemon (rpd). This issue is triggered when the packets attempt to initiate a BGP connection before a BGP session is successfully established.

This issue affects:
All versions prior to 19.3R3-S7;
19.4 versions prior to 19.4R3-S9;
20.2 versions prior to 20.2R3-S7;
20.3 versions prior to 20.3R3-S5;
20.4 versions prior to 20.4R3-S4;
21.1 versions prior to 21.1R3-S3;
21.2 versions prior to 21.2R3-S2;
21.3 versions prior to 21.3R3-S1;
21.4 versions prior to 21.4R2-S1, 21.4R3;
22.1 versions prior to 22.1R2;
22.2 versions prior to 22.2R2.

QID detection logic: (Authenticated)
It checks for vulnerable Junos OS version.

Successful exploit may allows an adjacent unauthenticated attacker to bypass an integrity check.