CVE-2017-17449 Information

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.

CVSS Vector

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

Reference

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

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.7