CVE-2017-17450
Summary
| CVE | CVE-2017-17450 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-12-07 00:29:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 7.8 HIGH from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.000510000 probability, percentile 0.159300000 (date 2026-05-17)
Problem Types: CWE-862 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:L/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Linux Kernel '/netfilter/xt_osf.c' Local Security Bypass Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| USN-3617-2: Linux (HWE) vulnerabilities | Ubuntu security notices | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3619-1: Linux kernel vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3583-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3617-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| Debian -- Security Information -- DSA-4073-1 linux | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| [security-announce] SUSE-SU-2018:0011-1: important: Security update for | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| Debian -- Security Information -- DSA-4082-1 linux | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| LKML: Kevin Cernekee: [PATCH] netfilter: xt_osf: Add missing permission checks | af854a3a-2127-422b-91ae-364da2661108 | lkml.org | Third Party Advisory |
| USN-3617-1: Linux kernel vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3619-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3632-1: Linux kernel (Azure) vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3583-1: Linux kernel vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.