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CVE-2017-17448

25
FAUCET Score

CVE-2017-17448 describes a privilege escalation vulnerability in the Linux kernel, specifically affecting versions through 4.14.4. It allows local users to bypass intended access restrictions by performing netfilter operations (new, get, del) without requiring the CAP_NET_ADMIN capability, due to a shared data structure across net namespaces. This vulnerability is rated as High severity (CVSS 7.8), indicating a local attack vector with low complexity that could lead to high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.14.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 68th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-862.rt56.804.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-49.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-862.el7
View patch

Vendor Advisories (1)

redhatCVE-2017-17448Moderate

kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure

Dec 3, 2017

References

access.redhat.com / errata/RHSA-2018:0654
access.redhat.com / errata/RHSA-2018:0676
access.redhat.com / errata/RHSA-2018:1062
patchwork.kernel.org / patch/10089373
PatchVendor Advisory
usn.ubuntu.com / 3617-1
usn.ubuntu.com / 3617-2
usn.ubuntu.com / 3617-3
usn.ubuntu.com / 3619-1
usn.ubuntu.com / 3619-2
usn.ubuntu.com / 3620-1
usn.ubuntu.com / 3620-2
usn.ubuntu.com / 3632-1
debian.org / security/2017/dsa-4073
debian.org / security/2018/dsa-4082
securityfocus.com / bid/102117
Third Party AdvisoryVDB Entry