CVE-2021-21702— Null Dereference in SoapClient
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I. Basic Information for CVE-2021-21702
Vulnerability Information
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Vulnerability Title
Null Dereference in SoapClient
Source: NVD (National Vulnerability Database)
Vulnerability Description
In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8.0.x below 8.0.2, when using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and thus cause a crash.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
PHP 代码问题漏洞
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 SoapClient 存在代码问题漏洞，攻击者可利用该漏洞强制一个空指针被解引用，从而触发拒绝服务。以下产品及型号受到影响：7.3.x 至 7.3.27, 7.4.x 至 7.4.15 and 8.0.x 至 8.0.2。
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-2021-21702
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- https://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
- https://www.tenable.com/security/tns-2021-14x_refsource_CONFIRM
- https://bugs.php.net/bug.php?id=80672x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210312-0005/x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-21702
IV. Related Vulnerabilities
Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-476
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V. Comments for CVE-2021-21702
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