CVE-2021-32820

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.

CVSS v3.0 8.6 HIGH
CVSS v2.0 5.0 MEDIUM

8.6^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars/	Exploit Third Party Advisory
https://github.com/express-handlebars/express-handlebars/pull/163	Exploit Third Party Advisory
https://www.npmjs.com/package/express-handlebars	Third Party Advisory
https://github.com/express-handlebars/express-handlebars/commit/78c47a235c4ad7bc2674bddd8ec2721567ed8c72	Patch Third Party Advisory
https://github.com/express-handlebars/express-handlebars/blob/78c47a235c4ad7bc2674bddd8ec2721567ed8c72/README.md#danger-	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:express_handlebars_project:express_handlebars:*:*:*:*:*:node.js:*:*

Information

Published : 2021-05-14 12:15

Updated : 2022-07-02 11:24

NVD link : CVE-2021-32820

Mitre link : CVE-2021-32820

JSON object : View

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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Products Affected

express_handlebars_project

express_handlebars

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