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Missing Authorization Affecting kernel package, versions <0:4.9.77-31.58.amzn1

Severity

 Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1710221
  • published27 Sept 2021
  • disclosed7 Dec 2017
Report a new vulnerability Found a mistake?

Introduced: 7 Dec 2017

CVE-2017-17448  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:4.9.77-31.58.amzn1 or higher.
This issue was patched in ALAS-2018-944.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

net/netfilter/nfnetlink_cthelper.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for new, get, and del operations, which allows local users to bypass intended access restrictions because the nfnl_cthelper_list data structure is shared across all net namespaces.