CVE-2024-27936: deno — Exploit & Fix

Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Starting in version 1.32.1 and prior to version 1.41.0 of the deno library, maliciously crafted permission request can show the spoofed permission prompt by inserting a broken ANSI escape sequence into the request contents. Deno is stripping any ANSI escape sequences from the permission prompt, but permissions given to the program are based on the contents that contain the ANSI escape sequences. Any Deno program can spoof the content of the interactive permission prompt by inserting a broken ANSI code, which allows a malicious Deno program to display the wrong file path or program name to the user. Version 1.41.0 of the deno library contains a patch for the issue.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-150 CWE-150

Affected Products

Vendor	Product	Versions
deno	deno	1.32.1 — 1.41.0
deno	deno_runtime	0.103.0 — 0.147.0

References

Advisories & Patches

https://github.com/denoland/deno/commit/78d430103a8f6931154ddbbe19d36f3b8630286d https://github.com/denoland/deno/commit/7e6b94231290020b55f1d08fb03ea8132781abc5 https://github.com/denoland/deno/security/advisories/GHSA-m4pq-fv2w-6hrw https://github.com/denoland/deno/commit/78d430103a8f6931154ddbbe19d36f3b8630286d https://github.com/denoland/deno/commit/7e6b94231290020b55f1d08fb03ea8132781abc5 https://github.com/denoland/deno/security/advisories/GHSA-m4pq-fv2w-6hrw

Exploits

https://github.com/denoland/deno/security/advisories/GHSA-m4pq-fv2w-6hrw https://github.com/denoland/deno/security/advisories/GHSA-m4pq-fv2w-6hrw

Frequently Asked Questions

What is CVE-2024-27936? +

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Starting in version 1.32.1 and prior to version 1.41.0 of the deno library, maliciously crafted permission request can show the spoofed permission prompt by inserting a broken ANSI escape sequence into the request contents. Deno is stripping any ANSI escape sequences from the permission prompt, but permissions given to the program are based on the contents that contain the ANSI escape sequences. Any Deno program can spoof the content of the interactive permission prompt by inserting a broken ANSI code, which allows a malicious Deno program to display the wrong file path or program name to the user. Version 1.41.0 of the deno library contains a patch for the issue. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-27936? +

CVE-2024-27936 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-27936? +

CVE-2024-27936 affects products from deno, specifically: deno, deno_runtime. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-27936? +

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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