Improper Input Validation Affecting yum-cron-hourly package, versions <0:3.4.3-137.49.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.49% (76th percentile)

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  • Snyk IDSNYK-AMZN201803-YUMCRONHOURLY-1673381
  • published27 Sept 2021
  • disclosed26 Jan 2014

Introduced: 26 Jan 2014

CVE-2014-0022  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 yum-cron-hourly to version 0:3.4.3-137.49.amzn1 or higher.
This issue was patched in ALAS-2014-315.

NVD Description

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

The installUpdates function in yum-cron/yum-cron.py in yum 3.4.3 and earlier does not properly check the return value of the sigCheckPkg function, which allows remote attackers to bypass the RMP package signing restriction via an unsigned package.

CVSS Scores

version 3.1