CVE-2020-7071— FILTER_VALIDATE_URL accepts URLs with invalid userinfo
Quick assessment
Affected
PHP Group PHP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
PHP（PHP：Hypertext Preprocessor，PHP：超文本预处理器）是PHP社区的共同维护的一种开源的通用计算机脚本语言。该语言主要用于Web开发，支持多种数据库及操作系统。 PHP 存在输入验证错误漏洞，该漏洞源于php_url_parse_ex函数导致FILTER_VALIDATE_URL接受带有无效userinfo的URL。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-7071
Vulnerability Information
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Vulnerability Title
FILTER_VALIDATE_URL accepts URLs with invalid userinfo
Source: CVE Program / CVE List V5
Vulnerability Description
In PHP versions 7.3.x below 7.3.26, 7.4.x below 7.4.14 and 8.0.0, when validating URL with functions like filter_var($url, FILTER_VALIDATE_URL), PHP will accept an URL with invalid password as valid URL. This may lead to functions that rely on URL being valid to mis-parse the URL and produce wrong data as components of the URL.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP（PHP：Hypertext Preprocessor，PHP：超文本预处理器）是PHP社区的共同维护的一种开源的通用计算机脚本语言。该语言主要用于Web开发，支持多种数据库及操作系统。 PHP 存在输入验证错误漏洞，该漏洞源于php_url_parse_ex函数导致FILTER_VALIDATE_URL接受带有无效userinfo的URL。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2020-7071
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2020-7071 (4)
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https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
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https://security.netapp.com/advisory/ntap-20210312-0005/ x_refsource_CONFIRM
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Mailing List Discussions for CVE-2020-7071 (1)
Other References for CVE-2020-7071 (2)
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https://www.tenable.com/security/tns-2021-14 x_refsource_CONFIRM
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https://bugs.php.net/bug.php?id=77423 x_refsource_MISC
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V. Comments for CVE-2020-7071
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