DOS: Ascend Router
This signature detects attempts to exploit a known software vulnerability in Lucent routers. Versions up to and including MAX Router 5.0, Pipeline Router 6.0, and TNT Router 2.0 are susceptible. Attackers can send malformed packets to UDP/9 (Discard), causing the software to crash.
Extended Description
Certain versions of Ascends (Lucent) router software listen on port 9 (UDP Discard). Ascend provides configuration tools for MAX and Pipeline routers that locate locally installed routers by broadcasting a specially formatted packet to UDP port 9. An attacker can send a similar but malformed packet to the same port that will cause MAX and Pipeline routers running certain software versions to crash.
Affected Products
Lucent ascend_tnt_router
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Lucent
5.0