CVE-2021-21707 Affecting php:7.4/libzip-tools package, versions <0:1.6.1-1.module_el8.6.0+2750+78feabcb


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.22% (62nd percentile)

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  • Snyk IDSNYK-ALMALINUX8-PHP-5613033
  • published28 May 2023
  • disclosed8 Nov 2022

Introduced: 8 Nov 2022

CVE-2021-21707  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 php:7.4/libzip-tools to version 0:1.6.1-1.module_el8.6.0+2750+78feabcb or higher.
This issue was patched in ALSA-2022:7628.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php:7.4/libzip-tools package and not the php:7.4/libzip-tools package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.

CVSS Scores

version 3.1