Linux Kernel xt_osf.c Local Privilege Escalation Vulnerability

CVE-2017-17450 · MEDIUM Severity

AV:L/AC:L/AU:N/C:P/I:P/A:P

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.

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