CVE-2021-32820— handlebars 代码注入漏洞
一分钟漏洞结论
影响对象
express-handlebars express-handlebars
利用判断
存在公开或 AI PoC，应优先验证
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
handlebars是一款语义化的Web模板系统。 Express-handlebars 存在代码注入漏洞，布局参数可能会在下游应用程序中触发文件公开漏洞。
公开利用映射 1
Nuclei · 1
CVE-2021-32820.yaml [template]
可能的 ATT&CK 技术 1 AI
T1115 · Clipboard Data
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一、 漏洞 CVE-2021-32820 基础信息
漏洞信息
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Vulnerability Title
File disclosure in Express Handlebars
来源: CVE Program / CVE List V5
Vulnerability Description
Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5
Vulnerability Title
handlebars 代码注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
handlebars是一款语义化的Web模板系统。 Express-handlebars 存在代码注入漏洞，布局参数可能会在下游应用程序中触发文件公开漏洞。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| express-handlebars | express-handlebars | <= 5.3.2 | - |
|
二、漏洞 CVE-2021-32820 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | Express-handlebars is susceptible to local file inclusion because it mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extensions (i.e., file.extension) can be included. Files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-32820.yaml | POC详情 |
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CVE-2021-32820 补丁与修复 (2)
-
https://github.com/express-handlebars/express-handlebars/pull/163 x_refsource_MISC
CVE-2021-32820 其他参考 (3)
-
https://www.npmjs.com/package/express-handlebars x_refsource_MISC
-
https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars/ x_refsource_CONFIRM
IV. Related Vulnerabilities
V. Comments for CVE-2021-32820
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