Juniper Junos OS Packet Forwarding Engine (MX Series): FABRIC DOS: improper handling of unusual conditions

CVE-2023-44199Firmware, BMC & network fabriccurated

Impact

FABRIC DOS: improper handling of unusual conditions in the Packet Forwarding Engine lets an unauthenticated network attacker deny service. A PFE-level failure is worse than a control-plane one — it stops the data plane, so traffic stops even if the routing engine stays up.

Who can reach it

Unauthenticated, network-based, against the PFE on Junos MX platforms.

What to do

Junos upgrade plus reboot. MX platforms are usually the cluster's edge/border routers, so plan around a redundant pair — patch one side, fail over, patch the other.

References

https://nvd.nist.gov/vuln/detail/CVE-2023-44199

This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.