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CVE-2024-27935

7.2 · HIGH

Deno is a JavaScript, TypeScript, and WebAssembly runtime.

Published Mar 21, 2024CWE-488EPSS 0.72%

Overview

CVE-2024-27935 is a high-severity vulnerability. It was published on March 21, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 1.35.1 and prior to version 1.36.3, a vulnerability in Deno's Node.js compatibility runtime allows for cross-session data contamination during simultaneous asynchronous reads from Node.js streams sourced from sockets or files. The issue arises from the re-use of a global buffer (BUF) in stream_wrap.ts used as a performance optimization to limit allocations during these asynchronous read operations. This can lead to data intended for one session being received by another session, potentially resulting in data corruption and unexpected behavior. This affects all users of Deno that use the node.js compatibility layer for network communication or other streams, including packages that may require node.js libraries indirectly. Version 1.36.3 contains a patch for this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/denoland/deno/commit/3e9fb8aafd9834ebacd27734cea4310caaf794c6GitHubgithub.com/denoland/deno/issues/20188GitHubgithub.com/denoland/deno/security/advisories/GHSA-wrqv-pf6j-mqjpGitHubgithub.com/denoland/deno/commit/3e9fb8aafd9834ebacd27734cea4310caaf794c6GitHubgithub.com/denoland/deno/issues/20188GitHubgithub.com/denoland/deno/security/advisories/GHSA-wrqv-pf6j-mqjp

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27935?

CVE-2024-27935 is a high-severity vulnerability. It was published on March 21, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2024-27935?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-27935?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-27935?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27935 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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