CVE-2025-43853

Description

The WebAssembly Micro Runtime's (WAMR) iwasm package is the executable binary built with WAMR VMcore which supports WebAssembly System Interface (WASI) and command line interface. Anyone running WAMR up to and including version 2.2.0 or WAMR built with libc-uvwasi on Windows is affected by a symlink following vulnerability. On WAMR running in Windows, creating a symlink pointing outside of the preopened directory and subsequently opening it with create flag will create a file on host outside of the sandbox. If the symlink points to an existing host file, it's also possible to open it and read its content. Version 2.3.0 fixes the issue.

Reserved 2025-04-17 | Published 2025-05-15 | Updated 2025-05-15 | Assigner GitHub_M

Problem types

CWE-61: UNIX Symbolic Link (Symlink) Following

Product status

< 2.3.0
affected

References

github.com/...untime/security/advisories/GHSA-8fc8-4g25-c8m7

github.com/...ommit/28702edaf739cdeee54e81efe5868bf00724c33c

cve.org (CVE-2025-43853)

nvd.nist.gov (CVE-2025-43853)

Download JSON