CVE-2017-17448

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.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://patchwork.kernel.org/patch/10089373/ patch vendor advisory
https://usn.ubuntu.com/3617-1/ vendor advisory
https://usn.ubuntu.com/3619-2/ vendor advisory
https://www.debian.org/security/2018/dsa-4082 vendor advisory
https://usn.ubuntu.com/3617-3/ vendor advisory
https://usn.ubuntu.com/3632-1/ vendor advisory
https://usn.ubuntu.com/3620-2/ vendor advisory
https://access.redhat.com/errata/RHSA-2018:1062 vendor advisory
https://access.redhat.com/errata/RHSA-2018:0654 vendor advisory
https://access.redhat.com/errata/RHSA-2018:0676 vendor advisory
https://www.debian.org/security/2017/dsa-4073 vendor advisory
https://usn.ubuntu.com/3617-2/ vendor advisory
http://www.securityfocus.com/bid/102117 vdb entry third party advisory
https://usn.ubuntu.com/3620-1/ vendor advisory
https://usn.ubuntu.com/3619-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-17448?
CVE-2017-17448 has been scored as a high severity vulnerability.
How to fix CVE-2017-17448?
To fix CVE-2017-17448, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-17448 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-17448 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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