An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker sending a specific malformed BGP update message to cause the session to reset, resulting in a Denial of Service (DoS). Continued receipt and processing of these malformed BGP update messages will create a sustained Denial of Service (DoS) condition.
Upon receipt of a BGP update message over an established BGP session containing a specifically malformed tunnel encapsulation attribute, when segment routing is enabled, internal processing of the malformed attributes within the update results in improper parsing of remaining attributes, leading to session reset:
BGP SEND Notification code 3 (Update Message Error) subcode 1 (invalid attribute list)
Only systems with segment routing enabled are vulnerable to this issue.
This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations, and requires a remote attacker to have at least one established BGP session.
This issue affects:
Junos OS:
Junos OS Evolved:
The product does not handle or incorrectly handles an exceptional condition.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Junos | Juniper | * | 21.4 (excluding) |
| Junos | Juniper | 21.4 (including) | 21.4 (including) |
| Junos | Juniper | 21.4-r1 (including) | 21.4-r1 (including) |
| Junos | Juniper | 21.4-r1-s1 (including) | 21.4-r1-s1 (including) |
| Junos | Juniper | 21.4-r1-s2 (including) | 21.4-r1-s2 (including) |
| Junos | Juniper | 21.4-r2 (including) | 21.4-r2 (including) |
| Junos | Juniper | 21.4-r2-s1 (including) | 21.4-r2-s1 (including) |
| Junos | Juniper | 21.4-r2-s2 (including) | 21.4-r2-s2 (including) |
| Junos | Juniper | 21.4-r3 (including) | 21.4-r3 (including) |
| Junos | Juniper | 21.4-r3-s1 (including) | 21.4-r3-s1 (including) |
| Junos | Juniper | 21.4-r3-s2 (including) | 21.4-r3-s2 (including) |
| Junos | Juniper | 21.4-r3-s3 (including) | 21.4-r3-s3 (including) |
| Junos | Juniper | 21.4-r3-s4 (including) | 21.4-r3-s4 (including) |
| Junos | Juniper | 21.4-r3-s5 (including) | 21.4-r3-s5 (including) |
| Junos | Juniper | 21.4-r3-s6 (including) | 21.4-r3-s6 (including) |
| Junos | Juniper | 21.4-r3-s7 (including) | 21.4-r3-s7 (including) |
| Junos | Juniper | 22.2 (including) | 22.2 (including) |
| Junos | Juniper | 22.2-r1 (including) | 22.2-r1 (including) |
| Junos | Juniper | 22.2-r1-s1 (including) | 22.2-r1-s1 (including) |
| Junos | Juniper | 22.2-r1-s2 (including) | 22.2-r1-s2 (including) |
| Junos | Juniper | 22.2-r2 (including) | 22.2-r2 (including) |
| Junos | Juniper | 22.2-r2-s1 (including) | 22.2-r2-s1 (including) |
| Junos | Juniper | 22.2-r2-s2 (including) | 22.2-r2-s2 (including) |
| Junos | Juniper | 22.2-r3 (including) | 22.2-r3 (including) |
| Junos | Juniper | 22.2-r3-s1 (including) | 22.2-r3-s1 (including) |
| Junos | Juniper | 22.2-r3-s2 (including) | 22.2-r3-s2 (including) |
| Junos | Juniper | 22.2-r3-s3 (including) | 22.2-r3-s3 (including) |
| Junos | Juniper | 22.3 (including) | 22.3 (including) |
| Junos | Juniper | 22.3-r1 (including) | 22.3-r1 (including) |
| Junos | Juniper | 22.3-r1-s1 (including) | 22.3-r1-s1 (including) |
| Junos | Juniper | 22.3-r1-s2 (including) | 22.3-r1-s2 (including) |
| Junos | Juniper | 22.3-r2 (including) | 22.3-r2 (including) |
| Junos | Juniper | 22.3-r2-s1 (including) | 22.3-r2-s1 (including) |
| Junos | Juniper | 22.3-r2-s2 (including) | 22.3-r2-s2 (including) |
| Junos | Juniper | 22.3-r3 (including) | 22.3-r3 (including) |
| Junos | Juniper | 22.3-r3-s1 (including) | 22.3-r3-s1 (including) |
| Junos | Juniper | 22.3-r3-s2 (including) | 22.3-r3-s2 (including) |
| Junos | Juniper | 22.4 (including) | 22.4 (including) |
| Junos | Juniper | 22.4-r1 (including) | 22.4-r1 (including) |
| Junos | Juniper | 22.4-r1-s1 (including) | 22.4-r1-s1 (including) |
| Junos | Juniper | 22.4-r1-s2 (including) | 22.4-r1-s2 (including) |
| Junos | Juniper | 22.4-r2 (including) | 22.4-r2 (including) |
| Junos | Juniper | 22.4-r2-s1 (including) | 22.4-r2-s1 (including) |
| Junos | Juniper | 22.4-r2-s2 (including) | 22.4-r2-s2 (including) |
| Junos | Juniper | 22.4-r3 (including) | 22.4-r3 (including) |
| Junos | Juniper | 22.4-r3-s1 (including) | 22.4-r3-s1 (including) |
| Junos | Juniper | 22.4-r3-s2 (including) | 22.4-r3-s2 (including) |
| Junos | Juniper | 23.2 (including) | 23.2 (including) |
| Junos | Juniper | 23.2-r1 (including) | 23.2-r1 (including) |
| Junos | Juniper | 23.2-r1-s1 (including) | 23.2-r1-s1 (including) |
| Junos | Juniper | 23.2-r1-s2 (including) | 23.2-r1-s2 (including) |
| Junos | Juniper | 23.2-r2 (including) | 23.2-r2 (including) |
| Junos | Juniper | 23.4 (including) | 23.4 (including) |
| Junos | Juniper | 23.4-r1 (including) | 23.4-r1 (including) |
| Junos | Juniper | 23.4-r1-s1 (including) | 23.4-r1-s1 (including) |
| Junos_os_evolved | Juniper | * | 21.4 (excluding) |
| Junos_os_evolved | Juniper | 21.4 (including) | 21.4 (including) |
| Junos_os_evolved | Juniper | 21.4-r1 (including) | 21.4-r1 (including) |
| Junos_os_evolved | Juniper | 21.4-r1-s1 (including) | 21.4-r1-s1 (including) |
| Junos_os_evolved | Juniper | 21.4-r1-s2 (including) | 21.4-r1-s2 (including) |
| Junos_os_evolved | Juniper | 21.4-r2 (including) | 21.4-r2 (including) |
| Junos_os_evolved | Juniper | 21.4-r2-s1 (including) | 21.4-r2-s1 (including) |
| Junos_os_evolved | Juniper | 21.4-r2-s2 (including) | 21.4-r2-s2 (including) |
| Junos_os_evolved | Juniper | 21.4-r3 (including) | 21.4-r3 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s1 (including) | 21.4-r3-s1 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s2 (including) | 21.4-r3-s2 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s3 (including) | 21.4-r3-s3 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s4 (including) | 21.4-r3-s4 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s5 (including) | 21.4-r3-s5 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s6 (including) | 21.4-r3-s6 (including) |
| Junos_os_evolved | Juniper | 21.4-r3-s7 (including) | 21.4-r3-s7 (including) |
| Junos_os_evolved | Juniper | 22.2 (including) | 22.2 (including) |
| Junos_os_evolved | Juniper | 22.2-r1 (including) | 22.2-r1 (including) |
| Junos_os_evolved | Juniper | 22.2-r1-s1 (including) | 22.2-r1-s1 (including) |
| Junos_os_evolved | Juniper | 22.2-r1-s2 (including) | 22.2-r1-s2 (including) |
| Junos_os_evolved | Juniper | 22.2-r2 (including) | 22.2-r2 (including) |
| Junos_os_evolved | Juniper | 22.2-r2-s1 (including) | 22.2-r2-s1 (including) |
| Junos_os_evolved | Juniper | 22.2-r2-s2 (including) | 22.2-r2-s2 (including) |
| Junos_os_evolved | Juniper | 22.2-r3 (including) | 22.2-r3 (including) |
| Junos_os_evolved | Juniper | 22.2-r3-s1 (including) | 22.2-r3-s1 (including) |
| Junos_os_evolved | Juniper | 22.2-r3-s2 (including) | 22.2-r3-s2 (including) |
| Junos_os_evolved | Juniper | 22.2-r3-s3 (including) | 22.2-r3-s3 (including) |
| Junos_os_evolved | Juniper | 22.3 (including) | 22.3 (including) |
| Junos_os_evolved | Juniper | 22.3-r1 (including) | 22.3-r1 (including) |
| Junos_os_evolved | Juniper | 22.3-r1-s1 (including) | 22.3-r1-s1 (including) |
| Junos_os_evolved | Juniper | 22.3-r1-s2 (including) | 22.3-r1-s2 (including) |
| Junos_os_evolved | Juniper | 22.3-r2 (including) | 22.3-r2 (including) |
| Junos_os_evolved | Juniper | 22.3-r2-s1 (including) | 22.3-r2-s1 (including) |
| Junos_os_evolved | Juniper | 22.3-r2-s2 (including) | 22.3-r2-s2 (including) |
| Junos_os_evolved | Juniper | 22.3-r3 (including) | 22.3-r3 (including) |
| Junos_os_evolved | Juniper | 22.3-r3-s1 (including) | 22.3-r3-s1 (including) |
| Junos_os_evolved | Juniper | 22.3-r3-s2 (including) | 22.3-r3-s2 (including) |
| Junos_os_evolved | Juniper | 22.4 (including) | 22.4 (including) |
| Junos_os_evolved | Juniper | 22.4-r1 (including) | 22.4-r1 (including) |
| Junos_os_evolved | Juniper | 22.4-r1-s1 (including) | 22.4-r1-s1 (including) |
| Junos_os_evolved | Juniper | 22.4-r1-s2 (including) | 22.4-r1-s2 (including) |
| Junos_os_evolved | Juniper | 22.4-r2 (including) | 22.4-r2 (including) |
| Junos_os_evolved | Juniper | 22.4-r2-s1 (including) | 22.4-r2-s1 (including) |
| Junos_os_evolved | Juniper | 22.4-r2-s2 (including) | 22.4-r2-s2 (including) |
| Junos_os_evolved | Juniper | 22.4-r3 (including) | 22.4-r3 (including) |
| Junos_os_evolved | Juniper | 22.4-r3-s1 (including) | 22.4-r3-s1 (including) |
| Junos_os_evolved | Juniper | 22.4-r3-s2 (including) | 22.4-r3-s2 (including) |
| Junos_os_evolved | Juniper | 23.2 (including) | 23.2 (including) |
| Junos_os_evolved | Juniper | 23.2-r1 (including) | 23.2-r1 (including) |
| Junos_os_evolved | Juniper | 23.2-r1-s1 (including) | 23.2-r1-s1 (including) |
| Junos_os_evolved | Juniper | 23.2-r1-s2 (including) | 23.2-r1-s2 (including) |
| Junos_os_evolved | Juniper | 23.2-r2 (including) | 23.2-r2 (including) |
| Junos_os_evolved | Juniper | 23.4 (including) | 23.4 (including) |
| Junos_os_evolved | Juniper | 23.4-r1 (including) | 23.4-r1 (including) |
| Junos_os_evolved | Juniper | 23.4-r1-s1 (including) | 23.4-r1-s1 (including) |