Use of Out-of-range Pointer Offset Affecting warmcat/libwebsockets package, versions [,4.3.4)
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-WARMCATLIBWEBSOCKETS-9056210
- published4 Mar 2025
- disclosed3 Mar 2025
- creditTrail of Bits, TrustInSoft
Introduced: 3 Mar 2025
NewCVE-2025-1866 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade warmcat/libwebsockets to version 4.3.4 or higher.
Overview
Affected versions of this package are vulnerable to Use of Out-of-range Pointer Offset due to improper handling of pointer arithmetic operations in inftrees.c. An attacker can cause undefined behavior if LWS_WITHOUT_EXTENSIONS is set to OFF in CMake (non-default setting) and LWS_WITH_HTTP_STREAM_COMPRESSION is set to ON in CMake (non-default setting).
Note: This vulnerability only affects applications built on a Win32 system.