Improper Input Validation Affecting php7 package, versions <7.3.29-r0


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
2.09% (80th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALPINE312-PHP7-1316244
  • published6 Jul 2021
  • disclosed4 Oct 2021

Introduced: 6 Jul 2021

CVE-2021-21705  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Alpine:3.12 php7 to version 7.3.29-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 7.3.29, 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.

CVSS Base Scores

version 3.1