Junos OS and Junos OS Evolved: A specific EVPN type-5 route causes rpd crash

Summary

A Stack-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) component of Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an rpd crash, leading to Denial of Service (DoS). On all Junos OS and Junos OS Evolved platforms, when EVPN is configured, and a specific EVPN type-5 route is received via BGP, rpd crashes and restarts. Continuous receipt of this specific route will lead to a sustained Denial of Service (DoS) condition. This issue affects: Junos OS: • all versions before 21.2R3-S7, • from 21.4 before 21.4R3-S5, • from 22.1 before 22.1R3-S4, • from 22.2 before 22.2R3-S2, • from 22.3 before 22.3R3-S1, • from 22.4 before 22.4R3, • from 23.2 before 23.2R2. Junos OS Evolved: • all versions before 21.4R3-S5-EVO, • from 22.1-EVO before 22.1R3-S4-EVO, • from 22.2-EVO before 22.2R3-S2-EVO, • from 22.3-EVO before 22.3R3-S1-EVO, • from 22.4-EVO before 22.4R3-EVO, • from 23.2-EVO before 23.2R2-EVO.

Timeline

1. Apr 12, 2024, 3:07 PM UTCCVE published
2. Jul 31, 2024, 4:27 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Aug 2, 2024, 1:32 AM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 21.2R3-S7; From 21.4 · fixed in 21.4R3-S5; From 22.1 · fixed in 22.1R3-S4; From 22.2 · fixed in 22.2R3-S2; From 22.3 · fixed in 22.3R3-S1; From 22.4 · fixed in 22.4R3; From 23.2 · fixed in 23.2R2

• Juniper Networks Junos OS Evolved

  fixed in 21.4R3-S5-EVO; From 22.1-EVO · fixed in 22.1R3-S4-EVO; From 22.2-EVO · fixed in 22.2R3-S2-EVO; From 22.3-EVO · fixed in 22.3R3-S1-EVO; From 22.4-EVO · fixed in 22.4R3-EVO; From 23.2-EVO · fixed in 23.2R2-EVO

References 2