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CVE-2021-32822— File disclosure in hbs

Quick assessment

Affected
pillarjs hbs
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.

TryGhost express-hbs是具有多种布局、块和缓存部分的 Express 车把模板引擎。 TryGhost express-hbs 中存在代码注入漏洞，该漏洞源于产品的Express render API将纯模板数据与引擎配置选项混合在一起。攻击者可通过覆盖内部配置选项导致文件泄露。

CVSS 4.0 · Medium EPSS 1.18% · P67

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-32822

Vulnerability Information
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Vulnerability Title
File disclosure in hbs
Source: CVE Program / CVE List V5
Vulnerability Description
The npm hbs package is an Express view engine wrapper for Handlebars. Depending on usage, users of hbs may be vulnerable to a file disclosure vulnerability. There is currently no patch for this vulnerability. hbs mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options a file disclosure vulnerability may be triggered in downstream applications. For an example PoC see the referenced GHSL-2021-020.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
文件和路径信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
TryGhost express-hbs 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TryGhost express-hbs是具有多种布局、块和缓存部分的 Express 车把模板引擎。 TryGhost express-hbs 中存在代码注入漏洞，该漏洞源于产品的Express render API将纯模板数据与引擎配置选项混合在一起。攻击者可通过覆盖内部配置选项导致文件泄露。
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
pillarjs hbs all -

II. Public POCs for CVE-2021-32822

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III. Intelligence Information for CVE-2021-32822

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Other References for CVE-2021-32822 (1)

IV. Related Vulnerabilities

Same product: hbs
Same vendor: pillarjs
Same weakness: CWE-538

V. Comments for CVE-2021-32822

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