Directory Traversal Affecting php7 package, versions <7.3.31-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.09% (42nd percentile)

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  • Snyk IDSNYK-ALPINE312-PHP7-1658279
  • published24 Sept 2021
  • disclosed4 Oct 2021

Introduced: 24 Sep 2021

CVE-2021-21706  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Alpine:3.12 php7 to version 7.3.31-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 7.3.31, 7.4.x below 7.4.24 and 8.0.x below 8.0.11, in Microsoft Windows environment, ZipArchive::extractTo may be tricked into writing a file outside target directory when extracting a ZIP file, thus potentially causing files to be created or overwritten, subject to OS permissions.

CVSS Scores

version 3.1