CVE-2021-21705

CVE Details

Release Date:	2021-10-04
Impact:	None	What is this?

Description

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.

See more information about CVE-2021-21705 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.3
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	Low
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (libzip)	ELSA-2022-1935	2022-05-17
Oracle Linux version 8 (php)	ELSA-2022-1935	2022-05-17
Oracle Linux version 8 (php-pear)	ELSA-2022-1935	2022-05-17
Oracle Linux version 8 (php-pecl-apcu)	ELSA-2022-1935	2022-05-17
Oracle Linux version 8 (php-pecl-rrd)	ELSA-2022-1935	2022-05-17
Oracle Linux version 8 (php-pecl-xdebug)	ELSA-2022-1935	2022-05-17
Oracle Linux version 8 (php-pecl-zip)	ELSA-2022-1935	2022-05-17