CVE-2024-27933
Deno Node IPC File Descriptor Premature Close Permission Prompt Bypass
Description
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.
INFO
Published Date :
March 21, 2024, 2:52 a.m.
Last Modified :
March 21, 2024, 12:58 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
6.0
Exploitability Score :
1.5
Public PoC/Exploit Available at Github
CVE-2024-27933 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
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CVE-2024-27933 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-27933 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Received by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Description 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. Added Reference GitHub, Inc. https://github.com/denoland/deno/security/advisories/GHSA-6q4w-9x56-rmwq [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/commit/55fac9f5ead6d30996400e8597c969b675c5a22b [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/commit/5a91a065b882215dde209baf626247e54c21a392 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L214 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L220 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L225 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L241 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L256 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L265 [No types assigned] Added Reference GitHub, Inc. https://github.com/denoland/deno/blob/v1.39.0/runtime/permissions/prompter.rs#L99 [No types assigned] Added CWE GitHub, Inc. CWE-863 Added CVSS V3.1 GitHub, Inc. AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-27933 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-27933
weaknesses.