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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.securityfocus.com/bid/102110 ↗
- https://usn.ubuntu.com/3617-1/ ↗
- https://usn.ubuntu.com/3619-2/ ↗
- https://www.debian.org/security/2018/dsa-4082 ↗
- https://usn.ubuntu.com/3617-3/ ↗
- https://lkml.org/lkml/2017/12/5/982 ↗
- https://usn.ubuntu.com/3583-2/ ↗
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html ↗
- https://usn.ubuntu.com/3632-1/ ↗
- https://usn.ubuntu.com/3583-1/ ↗
- https://www.debian.org/security/2017/dsa-4073 ↗
- https://usn.ubuntu.com/3617-2/ ↗
- https://usn.ubuntu.com/3619-1/ ↗