Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. By using ANSI escape sequences and a race between `libc::tcflush(0, libc::TCIFLUSH)` and reading standard input, it's possible to manipulate the permission prompt and force it to allow an unsafe action regardless of the user input. Some ANSI escape sequences act as a info request to the master terminal emulator and the terminal emulator sends back the reply in the PTY channel. standard streams also use this channel to send and get data. For example the `\033[6n` sequence requests the current cursor position. These sequences allow us to append data to the standard input of Deno. This vulnerability allows an attacker to bypass Deno permission policy. This vulnerability is fixed in 1.42.2.
History

Thu, 04 Sep 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Deno
Deno deno
CPEs cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*
Vendors & Products Deno
Deno deno

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-02T02:13:39.109Z

Reserved: 2024-04-12T19:41:51.168Z

Link: CVE-2024-32477

cve-icon Vulnrichment

Updated: 2024-08-02T02:13:39.109Z

cve-icon NVD

Status : Analyzed

Published: 2024-04-18T20:15:17.927

Modified: 2025-09-04T15:16:44.020

Link: CVE-2024-32477

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.