CVE-2017-17450

HIGH

Linux Kernel < 4.14.4 - Missing Authorization for xt_osf add_callback and remove_callback

Title source: llm
STIX 2.1

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.

References (13)

Core 13
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/102110
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/
Third Party Advisory x_refsource_misc
https://lkml.org/lkml/2017/12/5/982
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3583-2/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3632-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3583-1/
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/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3619-1/

Scores

CVSS v3 7.8
EPSS 0.0039
EPSS Percentile 31.0%
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