#js

### Impact A `__proto__` pollution vulnerability exists in synchrony versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. ### Summary A `__proto__` pollution vulnerability exists in the [LiteralMap] transformer allowing crafted input to modify properties in the Object prototype. When executing in Node.js, due to use of the `prettier` module, defining a `parser` property on `__proto__` with a path to a JS module on disk [causes a `require` of the value][prettier/src/main/parser.js] which can lead to arbitrary code execution. ### Patch A fix has been released in `[email protected]`. ### Mitigation - Upgrade synchrony to v2.4.4 - Launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flag ### Proof of Concept Craft a malicious input file named `poc.js` as follows: ```js // Malicious code to be run after this file is imported. Logs the result of shell command "dir" to the console. console.log(req...

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Red Hat Security Advisory 2023-5840-01 - Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-5838-01 - libnghttp2 is a library implementing the Hypertext Transfer Protocol version 2 protocol in C. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-5837-01 - nghttp2 contains the Hypertext Transfer Protocol version 2 client, server, and proxy programs as well as a library implementing the HTTP/2 protocol in C. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-5835-01 - The rhc-worker-script packages provide Remote Host Configuration worker for executing an interpreted programming language script on hosts managed by Red Hat Insights. Issues addressed include a denial of service vulnerability.

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Red Hat Security Advisory 2023-5809-01 - Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to individual teams, while automation developers retain the freedom to write tasks that leverage existing knowledge without the overhead. Ansible Automation Platform makes it possible for users across an organization to share, vet, and manage automation content by means of a simple, powerful, and agentless language.

Red Hat Security Advisory 2023-5805-01 - Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to individual teams, while automation developers retain the freedom to write tasks that leverage existing knowledge without the overhead. Ansible Automation Platform makes it possible for users across an organization to share, vet, and manage automation content by means of a simple, powerful, and agentless language. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-5803-01 - Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Issues addressed include a denial of service vulnerability.