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Out-of-bounds Write Affecting libidn2 package, versions <0:2.3.0-1.4.amzn1

0.0
medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 2.09% (89th percentile)
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NVD
9.8 critical
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SUSE
6.3 medium
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Red Hat
5.6 medium

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  • Snyk ID SNYK-AMZN201803-LIBIDN2-1720508
  • published 27 Sep 2021
  • disclosed 21 Oct 2019
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Introduced: 21 Oct 2019

CVE-2019-18224 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 libidn2 to version 0:2.3.0-1.4.amzn1 or higher.
This issue was patched in ALAS-2019-1327.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libidn2 package and not the libidn2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.

References