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Improper Access Control Affecting kernel-debug package, versions <0:3.10.0-693.25.2.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELDEBUG-4795840
  • published 26 Jul 2021
  • disclosed 5 Dec 2017
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Introduced: 5 Dec 2017

CVE-2017-17449 Open this link in a new tab
CWE-284 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-debug to version 0:3.10.0-693.25.2.el7 or higher.
This issue was patched in RHSA-2018:1130.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL. See How to fix? for RHEL: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.