CVE-2017-17449

Description

The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.

Category

4.7
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.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 ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3619-2/ vendor advisory
https://www.debian.org/security/2018/dsa-4082 vendor advisory
https://lkml.org/lkml/2017/12/5/950 third party advisory mailing list
http://www.securityfocus.com/bid/102122 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2018:1062 vendor advisory
https://source.android.com/security/bulletin/pixel/2018-04-01
https://access.redhat.com/errata/RHSA-2018:0654 vendor advisory
https://access.redhat.com/errata/RHSA-2018:0676 vendor advisory
https://usn.ubuntu.com/3653-2/ vendor advisory
https://usn.ubuntu.com/3655-1/ vendor advisory
https://access.redhat.com/errata/RHSA-2018:1170 vendor advisory
https://access.redhat.com/errata/RHSA-2018:1130 vendor advisory
https://www.debian.org/security/2017/dsa-4073 vendor advisory
https://usn.ubuntu.com/3655-2/ vendor advisory
https://usn.ubuntu.com/3653-1/ vendor advisory
https://usn.ubuntu.com/3657-1/ vendor advisory
https://usn.ubuntu.com/3619-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-17449?
CVE-2017-17449 has been scored as a medium severity vulnerability.
How to fix CVE-2017-17449?
To fix CVE-2017-17449, 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-2017-17449 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-17449 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.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.