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CVE-2023-0568— Array overrun in common path resolve code

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是一种在服务器端执行的脚本语言。 PHP 8.0.28之前的8.0.X版本、8.1.16之前的8.1.X版本和8.2.3之前的8.2.X版本存在安全漏洞，该漏洞源于分配的缓冲区之后的字节被NULL值覆盖，这可能导致未经授权的数据访问或修改。

CVSS 7.5 · High EPSS 1.24% · P68

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services
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I. Basic Information for CVE-2023-0568

Vulnerability Information
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Vulnerability Title
Array overrun in common path resolve code
Source: CVE Program / CVE List V5
Vulnerability Description
In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区大小计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP是一种在服务器端执行的脚本语言。 PHP 8.0.28之前的8.0.X版本、8.1.16之前的8.1.X版本和8.2.3之前的8.2.X版本存在安全漏洞，该漏洞源于分配的缓冲区之后的字节被NULL值覆盖，这可能导致未经授权的数据访问或修改。
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

Vendor Product Affected Versions CPE Subscribe
PHP Group PHP 8.0.x ~ 8.0.28 -

II. Public POCs for CVE-2023-0568

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III. Intelligence Information for CVE-2023-0568

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Vendor Advisories for CVE-2023-0568 (1)

Other References for CVE-2023-0568 (1)

Same Patch Batch · PHP Group · 2023-02-16 · 3 CVEs total

CVE-2023-0567 7.7 HIGH password_verify() always returns true for some invalid hashes
CVE-2023-0662 7.5 HIGH DoS vulnerability when parsing multipart request body

IV. Related Vulnerabilities

Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-131

V. Comments for CVE-2023-0568

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