An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).
On devices with SRv6 (Segment Routing over IPv6) enabled, an attacker can send a malformed BGP UPDATE packet which will cause the rpd to crash and restart. Continued receipt of these UPDATE packets will cause a sustained DoS condition.
This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects Junos OS:
and Junos OS Evolved:
The product does not maintain or incorrectly maintains control over a resource throughout its lifetime of creation, use, and release.
Resources often have explicit instructions on how to be created, used and destroyed. When code does not follow these instructions, it can lead to unexpected behaviors and potentially exploitable states. Even without explicit instructions, various principles are expected to be adhered to, such as “Do not use an object until after its creation is complete,” or “do not use an object after it has been slated for destruction.”