CVE-2023-28XX9

The Code Review Patch challenge centers around reviewing a piece of code that has known vulnerabilities and identifying these issues purely through the code itself. The challenge begins by presenting the original, unpatched code and encourages participants to identify the security flaws without external aids. This process sharpens one's skills in code review and vulnerability identification.

If participants struggle to find the issue, they can then refer to the provided patch (diff file) which highlights the changes made to fix the vulnerabilities. This two-step approach ensures that learners first attempt to identify issues on their own, fostering a deeper understanding of common security flaws and their remedies. The specific example given involves a SAML Identity Provider in Go, addressing a vulnerability related to decompressing SAML requests. The patch introduces a safer decompression method to prevent potential attacks from malformed or excessively large compressed requests.