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CVE-2017-17450

Description

net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.

POC

Reference

- https://usn.ubuntu.com/3583-2/

Github

- https://github.com/ARPSyndicate/cvemon