Description
net/netfilter/nfnetlink_cthelper.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for new, get, and del operations, which allows local users to bypass intended access restrictions because the nfnl_cthelper_list 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
- https://patchwork.kernel.org/patch/10089373/ ↗
- 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://usn.ubuntu.com/3632-1/ ↗
- https://usn.ubuntu.com/3620-2/ ↗
- https://access.redhat.com/errata/RHSA-2018:1062 ↗
- https://access.redhat.com/errata/RHSA-2018:0654 ↗
- https://access.redhat.com/errata/RHSA-2018:0676 ↗
- https://www.debian.org/security/2017/dsa-4073 ↗
- https://usn.ubuntu.com/3617-2/ ↗
- http://www.securityfocus.com/bid/102117 ↗
- https://usn.ubuntu.com/3620-1/ ↗
- https://usn.ubuntu.com/3619-1/ ↗