#nodejs

In this week’s newsletter, Thorsten muses on how search engines and AI quietly gather your data while trying to influence your buying choices. Explore privacy-friendly alternatives and get the scoop on why it's important to question the platforms you interact with online.

Microsoft is calling attention to an ongoing malvertising campaign that makes use of Node.js to deliver malicious payloads capable of information theft and data exfiltration. The activity, first detected in October 2024, uses lures related to cryptocurrency trading to trick users into installing a rogue installer from fraudulent websites that masquerade as legitimate software like Binance or

### Summary The contents of arbitrary files can be returned to the browser if the dev server is running on Node or Bun. ### Impact Only apps with the following conditions are affected. - explicitly exposing the Vite dev server to the network (using --host or [server.host config option](https://vitejs.dev/config/server-options.html#server-host)) - running the Vite dev server on runtimes that are not Deno (e.g. Node, Bun) ### Details [HTTP 1.1 spec (RFC 9112) does not allow `#` in `request-target`](https://datatracker.ietf.org/doc/html/rfc9112#section-3.2). Although an attacker can send such a request. For those requests with an invalid `request-line` (it includes `request-target`), the spec [recommends to reject them with 400 or 301](https://datatracker.ietf.org/doc/html/rfc9112#section-3.2-4). The same can be said for HTTP 2 ([ref1](https://datatracker.ietf.org/doc/html/rfc9113#section-8.3.1-2.4.1), [ref2](https://datatracker.ietf.org/doc/html/rfc9113#section-8.3.1-3), [ref3](https...

ReversingLabs reveals a malicious npm package targeting Atomic and Exodus wallets, silently hijacking crypto transfers via software patching.

Malicious packages lurking on open source repositories like npm have become less effective, so cyberattackers are using a new strategy: offering "patches" for locally installed programs.

Threat actors are continuing to upload malicious packages to the npm registry so as to tamper with already-installed local versions of legitimate libraries to execute malicious code in what's seen as a sneakier attempt to stage a software supply chain attack. The newly discovered package, named pdf-to-office, masquerades as a utility for converting PDF files to Microsoft Word documents. But, in

**Vulnerability type:** Prototype Pollution **Affected Package:** * Product: js-object-utilities * Version: 2.2.0 **Remedy:** Update package to version 2.2.1. **Vulnerability Location(s):** ```js at module.exports (/node_modules/js-object-utilities/dist/set.js:16:29) ``` **Description:** The latest version of `js-object-utilities (2.2.0)`, (previous versions are also affected), is vulnerable to Prototype Pollution through the entry function(s) `lib.set`. An attacker can supply a payload with Object.prototype setter to introduce or modify properties within the global prototype chain, causing denial of service (DoS) a the minimum consequence. Moreover, the consequences of this vulnerability can escalate to other injection-based attacks, depending on how the library integrates within the application. For instance, if the polluted property propagates to sensitive Node.js APIs (e.g., exec, eval), it could enable an attacker to execute arbitrary commands within the application's conte...

A vulnerability was identified in `tarteaucitron.js`, where the `addOrUpdate` function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. ## Impact An attacker with high privileges could exploit this vulnerability to: - Modify object prototypes, affecting core JavaScript behavior, - Cause application crashes or unexpected behavior, - Potentially introduce further security vulnerabilities depending on the application's architecture. ## Fix https://github.com/AmauriC/tarteaucitron.js/commit/74c354c413ee3f82dff97a15a0a43942887c2b5b The issue was resolved by ensuring that user-controlled inputs cannot modify JavaScript object prototypes.

A vulnerability was identified in `tarteaucitron.js`, where user-controlled inputs for element dimensions (`width` and `height`) were not properly validated. This allowed an attacker with direct access to the site's source code or a CMS plugin to set values like `100%;height:100%;position:fixed;`, potentially covering the entire viewport and facilitating clickjacking attacks. ## Impact An attacker with high privileges could exploit this vulnerability to: - Overlay malicious UI elements on top of legitimate content, - Trick users into interacting with hidden elements (clickjacking), - Disrupt the intended functionality and accessibility of the website. ## Fix https://github.com/AmauriC/tarteaucitron.js/commit/25fcf828aaa55306ddc09cfbac9a6f8f126e2d07 The issue was resolved by enforcing strict validation and sanitization of user-provided CSS values to prevent unintended UI manipulation.

The North Korean threat actors behind the ongoing Contagious Interview campaign are spreading their tentacles on the npm ecosystem by publishing more malicious packages that deliver the BeaverTail malware, as well as a new remote access trojan (RAT) loader. "These latest samples employ hexadecimal string encoding to evade automated detection systems and manual code audits, signaling a variation