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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-12-07T00:00:00

Updated: 2024-08-05T20:51:31.636Z

Reserved: 2017-12-06T00:00:00

Link: CVE-2017-17449

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-12-07T00:29:00.350

Modified: 2018-05-31T01:29:00.737

Link: CVE-2017-17449

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-12-05T00:00:00Z

Links: CVE-2017-17449 - Bugzilla