CVE-2021-21705

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 04-10-2021 06:15

Last modified: - 22-02-2022 03:48

Total changes: - 4

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Low

Attack complexity

Network

Attack vector

None

Availability

None

Confidentiality

Low

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

5.3

Base score

3.9

1.4

Exploitability score

Impact score

Verification logic

vendor=php AND product=php AND versionStartIncluding=7.3.0 AND versionEndExcluding=7.3.29

vendor=php AND product=php AND versionStartIncluding=7.4.0 AND versionEndExcluding=7.4.21

vendor=php AND product=php AND versionStartIncluding=8.0.0 AND versionEndExcluding=8.0.8

vendor=netapp AND product=clustered_data_ontap AND version=-

vendor=oracle AND product=sd-wan_aware AND version=8.2

Reference

N/A-Exploit, Issue Tracking, Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20211029-0006/
https://www.oracle.com/security-alerts/cpujan2022.html

Keywords

CVE-2021-21705

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-21705

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures