Improper Input Validation Affecting php7.4 package, versions <7.4.3-4ubuntu2.5
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Test your applications- Snyk ID SNYK-UBUNTU2004-PHP74-1315920
- published 3 Jul 2021
- disclosed 4 Oct 2021
Introduced: 3 Jul 2021
CVE-2021-21705 Open this link in a new tabHow to fix?
Upgrade Ubuntu:20.04 php7.4 to version 7.4.3-4ubuntu2.5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream php7.4 package and not the php7.4 package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.