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CVE-2021-4252— WP-Ban ban-options.php toggle_checkbox cross site scripting

Quick assessment

Affected
unspecified WP-Ban
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.

WP-Ban是Lester Chan个人开发者的一个通过 IP、IP 范围、主机名、用户代理和引用 url 禁止用户访问 WordPress 的博客。 WP-Ban存在安全漏洞，该漏洞源于其ban-options.php文件的toggle_checkbox函数对某参数的操作允许攻击者实现跨站脚本。

CVSS 3.5 · Low EPSS 0.48% · P39
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I. Basic Information for CVE-2021-4252

Vulnerability Information
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Vulnerability Title
WP-Ban ban-options.php toggle_checkbox cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability, which was classified as problematic, has been found in WP-Ban. This issue affects the function toggle_checkbox of the file ban-options.php. The manipulation of the argument $_SERVER["HTTP_USER_AGENT"] leads to cross site scripting. The attack may be initiated remotely. The name of the patch is 13e0b1e922f3aaa3f8fcb1dd6d50200dd693fd76. It is recommended to apply a patch to fix this issue. The identifier VDB-216209 was assigned to this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对消息或数据结构的处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WP-Ban 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WP-Ban是Lester Chan个人开发者的一个通过 IP、IP 范围、主机名、用户代理和引用 url 禁止用户访问 WordPress 的博客。 WP-Ban存在安全漏洞，该漏洞源于其ban-options.php文件的toggle_checkbox函数对某参数的操作允许攻击者实现跨站脚本。
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
unspecified WP-Ban n/a -

II. Public POCs for CVE-2021-4252

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III. Intelligence Information for CVE-2021-4252

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Patches & Fixes for CVE-2021-4252 (2)

Vendor Advisories for CVE-2021-4252 (1)

Same Patch Batch · unspecified · 2022-12-18 · 7 CVEs total

CVE-2021-4249 4.3 MEDIUM xml-conduit DOCTYPE Entity Expansion Parse.hs infinite loop
CVE-2022-4603 4.3 MEDIUM ppp pppdump pppdump.c dumpppp array index
CVE-2021-4251 3.5 LOW as include.cdn.php getFullURL cross site scripting
CVE-2022-4593 3.5 LOW retra-system cross site scripting
CVE-2022-4595 3.5 LOW django-openipam exposed_hosts.html cross site scripting
CVE-2022-4596 3.5 LOW Shoplazza Add Blog Post cross site scripting

IV. Related Vulnerabilities

Same product: WP-Ban
Same vendor: unspecified
Same weakness: CWE-707

V. Comments for CVE-2021-4252

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