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Out-of-bounds Write Affecting libx11 package, versions <2:1.6.3-1ubuntu2.1

low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 1.4% (87th percentile)
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NVD
9.8 critical
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Red Hat
5 medium

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  • Snyk ID SNYK-UBUNTU1604-LIBX11-339106
  • published 13 Dec 2016
  • disclosed 13 Dec 2016
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Introduced: 13 Dec 2016

CVE-2016-7943 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Ubuntu:16.04 libx11 to version 2:1.6.3-1ubuntu2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libx11 package and not the libx11 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving length fields, which trigger out-of-bounds write operations.

References