CVE-2023-46234 – browserify-sign vulnerable via an upper bound check issue in `dsaVerify` that leads to a signature forgery attack

https://notcve.org/view.php?id=CVE-2023-46234

26 Oct 2023 — browserify-sign is a package to duplicate the functionality of node's crypto public key functions, much of this is based on Fedor Indutny's work on indutny/tls.js. An upper bound check issue in `dsaVerify` function allows an attacker to construct signatures that can be successfully verified by any public key, thus leading to a signature forgery attack. All places in this project that involve DSA verification of user-input signatures will be affected by this vulnerability. This issue has been patched in vers... • https://github.com/browserify/browserify-sign/commit/85994cd6348b50f2fd1b73c54e20881416f44a30 • CWE-347: Improper Verification of Cryptographic Signature •