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CVE-2021-21704— Multiple vulnerabilities in Firebird client extension

CVSS 5.0 · Medium EPSS 0.15% · P35
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I. Basic Information for CVE-2021-21704

Vulnerability Information
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Vulnerability Title
Multiple vulnerabilities in Firebird client extension
Source: NVD (National Vulnerability Database)
Vulnerability 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 Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
EasyApache 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EasyApache是Apache基金会的一个功能强大且易于使用的工具，内置在WHM/cPanel中，可以使用它来更新和配置Apache web服务器。 EasyApache 存在安全漏洞，该漏洞源于EasyApache中PDO_Firebird的缓冲区溢出。攻击者可利用该漏洞触发拒绝服务，并可能运行代码。
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

VendorProductAffected VersionsCPESubscribe
PHP GroupPHP 7.3.x ~ 7.3.29 -

II. Public POCs for CVE-2021-21704

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III. Intelligence Information for CVE-2021-21704

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Same Patch Batch · PHP Group · 2021-10-04 · 3 CVEs total

CVE-2021-217065.3 MEDIUMZipArchive::extractTo may extract outside of destination dir
CVE-2021-217054.3 MEDIUMIncorrect URL validation in FILTER_VALIDATE_URL

IV. Related Vulnerabilities

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

V. Comments for CVE-2021-21704

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