H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. Users should upgrade to commit f010336 or later.
This issue was addressed with improved checks. This issue is fixed in watchOS 8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. Processing a maliciously crafted image may lead to arbitrary code execution.
3D Builder Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2023-21781, CVE-2023-21782, CVE-2023-21783, CVE-2023-21784, CVE-2023-21785, CVE-2023-21786, CVE-2023-21787, CVE-2023-21788, CVE-2023-21789, CVE-2023-21790, CVE-2023-21791, CVE-2023-21792, CVE-2023-21793.
3D Builder Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2023-21780, CVE-2023-21782, CVE-2023-21783, CVE-2023-21784, CVE-2023-21785, CVE-2023-21786, CVE-2023-21787, CVE-2023-21788, CVE-2023-21789, CVE-2023-21790, CVE-2023-21791, CVE-2023-21792, CVE-2023-21793.