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CVE-2020-7064— Use-of-uninitialized-value in exif

Quick assessment

Affected
PHP Group PHP
Exploitation
High exploitation probability; assess promptly
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PHPGroup和开放源代码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 7.2.x系列到 7.2.9之间版本, 7.3.x 系列到 7.3.16之间版本， 7.4.x 系列到7.4.4之间版本存在缓冲区错误漏洞，该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或

CVSS 6.5 · Medium EPSS 4.29% · P91

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2020-7064

Vulnerability Information
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Vulnerability Title
Use-of-uninitialized-value in exif
Source: CVE Program / CVE List V5
Vulnerability Description
In PHP versions 7.2.x below 7.2.9, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while parsing EXIF data with exif_read_data() function, it is possible for malicious data to cause PHP to read one byte of uninitialized memory. This could potentially lead to information disclosure or crash.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP（PHP：Hypertext Preprocessor，PHP：超文本预处理器）是PHPGroup和开放源代码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 7.2.x系列到 7.2.9之间版本, 7.3.x 系列到 7.3.16之间版本， 7.4.x 系列到7.4.4之间版本存在缓冲区错误漏洞，该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或
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 7.3.x ~ 7.3.16 -

II. Public POCs for CVE-2020-7064

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III. Intelligence Information for CVE-2020-7064

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Vendor Advisories for CVE-2020-7064 (4)

Mailing List Discussions for CVE-2020-7064 (2)

Other References for CVE-2020-7064 (2)

Same Patch Batch · PHP Group · 2020-04-01 · 3 CVEs total

CVE-2020-7065 7.4 HIGH mb_strtolower (UTF-32LE): stack-buffer-overflow at php_unicode_tolower_full
CVE-2020-7066 5.3 MEDIUM get_headers() silently truncates after a null byte

IV. Related Vulnerabilities

Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-125

V. Comments for CVE-2020-7064

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