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Out-of-bounds Write Affecting php7 package, versions <7.3.16-r0

0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.5% (76th percentile)
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NVD
8.8 high
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Red Hat
8.8 high

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  • Snyk ID SNYK-ALPINE312-PHP7-587792
  • published 21 Jul 2020
  • disclosed 1 Apr 2020
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Introduced: 1 Apr 2020

CVE-2020-7065 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Alpine:3.12 php7 to version 7.3.16-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php7 package and not the php7 package as distributed by Alpine. See How to fix? for Alpine:3.12 relevant fixed versions and status.

In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.