Directory Traversal Affecting kernel-debuginfo package, versions <0:4.14.219-119.340.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (59th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNELDEBUGINFO-1725411
  • published27 Sept 2021
  • disclosed19 Jan 2021

Introduced: 19 Jan 2021

CVE-2021-3178  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel-debuginfo to version 0:4.14.219-119.340.amzn1 or higher.
This issue was patched in ALAS-2021-1480.

NVD Description

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

fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior

CVSS Scores

version 3.1