CVE-2021-32792— XSS vulnerability when using OIDCPreservePost On in mod_auth_openidc
Quick assessment
Affected
zmartzone mod_auth_openidc
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.
mod_auth_openidc是一个应用软件。是 Apache 2.x HTTP 服务器的身份验证/授权模块，用作OpenID Connect 依赖方，根据 OpenID Connect 提供程序对用户进行身份验证。 Zmartzone mod_auth_openidc 存在跨站脚本漏洞，该漏洞源于mod_auth_openidc 2.4.8.4版本及之前版本在OIDCPreservePost选项为On时存在 XSS 漏洞。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-32792
Vulnerability Information
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Vulnerability Title
XSS vulnerability when using OIDCPreservePost On in mod_auth_openidc
Source: CVE Program / CVE List V5
Vulnerability Description
mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In mod_auth_openidc before version 2.4.9, there is an XSS vulnerability in when using `OIDCPreservePost On`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
mod_auth_openidc 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mod_auth_openidc是一个应用软件。是 Apache 2.x HTTP 服务器的身份验证/授权模块，用作OpenID Connect 依赖方，根据 OpenID Connect 提供程序对用户进行身份验证。 Zmartzone mod_auth_openidc 存在跨站脚本漏洞，该漏洞源于mod_auth_openidc 2.4.8.4版本及之前版本在OIDCPreservePost选项为On时存在 XSS 漏洞。
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 |
|---|---|---|---|---|
| zmartzone | mod_auth_openidc | < 2.4.9 | - |
|
II. Public POCs for CVE-2021-32792
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2021-32792 (2)
Vendor Advisories for CVE-2021-32792 (2)
Mailing List Discussions for CVE-2021-32792 (3)
Other References for CVE-2021-32792 (1)
IV. Related Vulnerabilities
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CVE-2026-54789
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mod_auth_openidc allows OIDCProviderAuthRequestMethod POSTs -
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Denial of service when manipulating mod_auth_openidc_session -
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mod_auth_openidc core dump when OIDCStripCookies is set and -
CVE-2022-23527
Open Redirect in oidc_validate_redirect_url()
Same vendor: zmartzone
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CVE-2021-39191
URL Redirection to Untrusted Site ('Open Redirect') in mod_a -
CVE-2021-32791
Hardcoded static IV and AAD with a reused key in AES GCM enc -
CVE-2021-32786
Open Redirect in oidc_validate_redirect_url() -
CVE-2021-32785
Format string bug in the Redis cache implementation
Same weakness: CWE-79
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AJA HELO Plus < 2.1.7 Stored XSS via System Name Parameter
V. Comments for CVE-2021-32792
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