CVE-2024-27933: high-severity vulnerability in denoland deno
Deno arbitrary file descriptor close via `op_node_ipc_pipe()` leading to permission prompt bypass
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.3epss 2.3%
Deno is a JavaScript, TypeScript, and WebAssembly runtime. In version 1.39.0, use of raw file descriptors in `op_node_ipc_pipe()` leads to premature close of arbitrary file descriptors, allowing standard input to be re-opened as a different resource resulting in permission prompt bypass. Node child_process IPC relies on the JS side to pass the raw IPC file descriptor to `op_node_ipc_pipe()`, which returns a `IpcJsonStreamResource` ID associated with the file descriptor. On closing the resource, the raw file descriptor is closed together.
Use of raw file descriptors in `op_node_ipc_pipe()` leads to premature close of arbitrary file descriptors. This allow standard input (fd 0) to be closed and re-opened for a different resource, which allows a silent permission prompt bypass. This is exploitable by an attacker controlling the code executed inside a Deno runtime to obtain arbitrary code execution on the host machine regardless of permissions.
This bug is known to be exploitable. There is a working exploit that achieves arbitrary code execution by bypassing prompts from zero permissions, additionally abusing the fact that Cache API lacks filesystem permission checks. The attack can be conducted silently as stderr can also be closed, suppressing all prompt outputs.
Version 1.39.1 fixes the bug.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
denoland · denoRelated CVEs — denoland deno
In the same product, most dangerous first.
CVE-2026-27190HIGHDeno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_processEPSS 2.5%CVE-2025-61787HIGHDeno is Vulnerable to Command Injection on Windows During Batch File ExecutionEPSS 2.1%CVE-2026-32260HIGHCommand Injection via incomplete shell metacharacter blocklist in node:child_process (bypass of CVE-2026-27190 fix)EPSS 1.6%CVE-2026-103473CRITICALDeno 2.7.0 through 2.9.7 Command Injection via node:child_processEPSS 1.5%CVE-2022-24783CRITICALSandbox bypass leading to arbitrary code execution in DenoEPSS 1.1%CVE-2023-28446HIGHDeno is vulnerable to interactive `run` permission prompt spoofing via improper ANSI neutralizationEPSS 1.1%
References
https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L214https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L220https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L225https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L241https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L256https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L265https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L99https://github.com/denoland/deno/commit/55fac9f5ead6d30996400e8597c969b675c5a22bhttps://github.com/denoland/deno/commit/5a91a065b882215dde209baf626247e54c21a392https://github.com/denoland/deno/security/advisories/GHSA-6q4w-9x56-rmwq