CVE-2017-17448
HIGHLinux Kernel < 4.14.4 - Missing Authorization in nfnetlink_cthelper
Title source: llmDescription
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.
References (15)
Core 15
Core References
Patch, Vendor Advisory x_refsource_misc
https://patchwork.kernel.org/patch/10089373/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3617-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3619-2/
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2018/dsa-4082
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3617-3/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3632-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3620-2/
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1062
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0654
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0676
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2017/dsa-4073
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3617-2/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/102117
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3620-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3619-1/
Scores
CVSS v3
7.8
EPSS
0.0037
EPSS Percentile
29.3%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-862
Status
published
Products (1)
linux/linux_kernel
< 4.14.4
Published
Dec 07, 2017
Tracked Since
Feb 18, 2026