CVE-2024-27931: deno Input Validation Flaw — Exploit

Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Insufficient validation of parameters in `Deno.makeTemp*` APIs would allow for creation of files outside of the allowed directories. This may allow the user to overwrite important files on the system that may affect other systems. A user may provide a prefix or suffix to a `Deno.makeTemp*` API containing path traversal characters. This is fixed in Deno 1.41.1.

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CVSS v3.1 Score

5.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
deno	deno	< 1.41.1

References

Exploits

https://github.com/denoland/deno/security/advisories/GHSA-hrqr-jv8w-v9jh https://github.com/denoland/deno/security/advisories/GHSA-hrqr-jv8w-v9jh

Frequently Asked Questions

What is CVE-2024-27931? +

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Insufficient validation of parameters in `Deno.makeTemp*` APIs would allow for creation of files outside of the allowed directories. This may allow the user to overwrite important files on the system that may affect other systems. A user may provide a prefix or suffix to a `Deno.makeTemp*` API containing path traversal characters. This is fixed in Deno 1.41.1. It has a CVSS v3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2024-27931? +

CVE-2024-27931 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-27931? +

CVE-2024-27931 affects products from deno, specifically: deno. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-27931? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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