CVE-2021-32817 Detail

Current Description

express-hbs is an Express handlebars template engine. express-hbs 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 .hbs appended to them. For complete details refer to the referenced GHSL-2021-019 report. Notes in documentation have been added to help users of express-hbs avoid this potential information exposure vulnerability.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.8 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
Base Score:  5.4 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/TryGhost/express-hbs#%EF%B8%8F-this-creates-a-potential-security-vulnerability Release Notes  Third Party Advisory 
https://github.com/TryGhost/express-hbs/commit/ff6fad6e357699412d4e916273314e5e7af1500e Patch  Third Party Advisory 
https://securitylab.github.com/advisories/GHSL-2021-019-express-hbs/ Exploit  Patch  Third Party Advisory 
https://www.npmjs.com/package/express-hbs Product 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Provider acceptance level GitHub, Inc.  

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Change History

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Quick Info

CVE Dictionary Entry:
CVE-2021-32817
NVD Published Date:
05/14/2021
NVD Last Modified:
05/19/2021
Source:
GitHub, Inc.