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Improper Access Control Affecting kernel-abi-whitelists package, versions <0:3.10.0-862.el7

Severity

 Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELABIWHITELISTS-2102084
  • published26 Jul 2021
  • disclosed5 Dec 2017
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Introduced: 5 Dec 2017

CVE-2017-17449  (opens in a new tab)
CWE-284  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Centos:7 kernel-abi-whitelists to version 0:3.10.0-862.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-abi-whitelists package and not the kernel-abi-whitelists package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.