CVE-2021-21705

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

04/10/2021

Last modified:

29/10/2022

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:php:php::::::::	7.3.0 (including)	7.3.29 (excluding)
cpe:2.3:a:php:php::::::::	7.4.0 (including)	7.4.21 (excluding)
cpe:2.3:a:php:php::::::::	8.0.0 (including)	8.0.8 (excluding)
cpe:2.3:a:netapp:clustered_data_ontap:-:::::::*
cpe:2.3:a:oracle:sd-wan_aware:8.2:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-21705

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools