Arbitrary Code Execution

Overview

math.js before 3.17.0 had an issue where private properties such as a constructor could be replaced by using unicode characters when creating an object.

Recommendation

Upgrade to version 3.17.0 or later.

References

• Commit #a60f3c8
• https://github.com/josdejong/mathjs/blob/master/HISTORY.md#2017-11-18-version-3170
• GitHub Advisory