Improper Input Validation Affecting php-mbstring package, versions <0:7.4.19-2.module+el8.6.0+13953+0a59ce9f


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.09% (42nd 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 Learn

Learn about Improper Input Validation vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS8-PHPMBSTRING-1961272
  • published26 Jul 2021
  • disclosed1 Jul 2021

Introduced: 1 Jul 2021

CVE-2021-21705  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Centos:8 php-mbstring to version 0:7.4.19-2.module+el8.6.0+13953+0a59ce9f or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-mbstring package and not the php-mbstring package as distributed by Centos. See How to fix? for Centos:8 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 Scores

version 3.1