#nodejs

A vulnerability exists in the ABB Cylon FLXeon controller that allows unauthenticated access to the Building Management System (BMS) or Building Automation System (BAS) dashboard. This exposes sensitive information, including system status, events, and alarms related to HVAC operations. Additionally, an attacker could manipulate environmental controls such as temperature settings, potentially disrupting building climate regulation and operational safety.

User sessions on ABB Cylon FLXeon controllers remain active for up to seven days, even after a client-side logout. Clicking "Log Out" does not properly revoke the session on the server, allowing attackers with access to stolen session tokens to maintain unauthorized access. This increases the risk of session hijacking and privilege abuse.

The ABB Cylon FLXeon BACnet controller uses a weak set of default administrative credentials that can be guessed in remote password attacks and gain full control of the system.

The ABB Cylon FLXeon BACnet controller suffers from insecure CORS configuration. Allowing all origins (app.options('*', cors()); can expose the API to data leaks, resource abuse, and potential XSS attacks.

An authenticated attacker can access sensitive information via the system logs page of ABB Cylon FLXeon controllers. The logs expose critical data, including the OpenSSL password for stored certificates. This information can be leveraged for further attacks, such as decrypting encrypted communications, impersonation, or gaining deeper system access.

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SCALANCE W700 Vulnerabilities: Double Free, Improper Restriction of Communication Channel to Intended Endpoints, Improper Resource Shutdown or Release, Inadequate Encryption Strength, Race Condition, Integer Overflow or Wraparound, Out-of-bounds Write, NULL Pointer Dereference, Externally Controlled Reference to a Resource in Another Sphere, Use After Free, Type Confusion, Improper Certificate Validation, Missing Release of Memory after Effective Lifetime, Uncontrolled Resource Consumption, Out-of-bounds Read, Inefficient Regular Expression Complexity, In...

### Summary This report finds 2 availability issues due to the regex used in the `parse-duration` npm package: 1. An event loop delay due to the CPU-bound operation of resolving the provided string, from a 0.5ms and up to ~50ms per one operation, with a varying size from 0.01 MB and up to 4.3 MB respectively. 2. An out of memory that would crash a running Node.js application due to a string size of roughly 10 MB that utilizes unicode characters. ### PoC Refer to the following proof of concept code that provides a test case and makes use of the regular expression in the library as its test case to match against strings: ```js // Vulnerable regex to use from the library: import parse from './index.js' function generateStressTestString(length, decimalProbability) { let result = ""; for (let i = 0; i < length; i++) { if (Math.random() < decimalProbability) { result += "....".repeat(99); } result += Math.floor(Math.random() * 10); } return result; } function ...

A CSRF vulnerability has been identified in the ABB Cylon FLXeon series. However, exploitation is limited to specific conditions due to the server's CORS configuration (Access-Control-Allow-Origin: * without Access-Control-Allow-Credentials: true). The vulnerability can only be exploited under the following scenarios: Same Domain: The attacker must host the malicious page on the same domain as the target server. Man-in-the-Middle (MitM): The attacker can intercept and modify traffic between the user and the server (e.g., on an unsecured network). Local Area Network (LAN) Access: The attacker must have access to the same network as the target server. Subdomains: The attacker can host the malicious page on a subdomain if the server allows it. Misconfigured CORS: The server’s CORS policy is misconfigured to allow certain origins or headers. Reflected XSS: The attacker can exploit a reflected XSS vulnerability to execute JavaScript in the context of the target origin.

**Why is this HackerOne CVE included in the Security Update Guide?** The vulnerability assigned to this CVE is in Node.js software which is consumed by Microsoft Visual Studio. It is being documented in the Security Update Guide to announce that the latest builds of Visual Studio are no longer vulnerable. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.

The SAP Approuter Node.js package version v16.7.1 and before is vulnerable to Authentication bypass. When trading an authorization code, an attacker can steal the session of the victim by injecting malicious payload, causing High impact on confidentiality and integrity of the application.