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Out-of-bounds Write Affecting libidn2 package, versions <2.0.4-1.1ubuntu0.2

medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 2.09% (90th 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-UBUNTU1804-LIBIDN2-474110
  • published 22 Oct 2019
  • 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 Ubuntu:18.04 libidn2 to version 2.0.4-1.1ubuntu0.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libidn2 package and not the libidn2 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 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