CyberRota Analysis
AI-GeneratedHoverfly, an open-source API simulation tool, is vulnerable to a race condition in its `AddDiff()` function when running in Diff mode, allowing concurrent writes to the `responsesDiff` map without proper synchronization. This flaw can lead to a fatal error that crashes the Hoverfly process, making it easily exploitable through simultaneous proxy requests. Organizations using versions prior to 1.12.8 should prioritize upgrading to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff mode, the `AddDiff()` function writes to the shared `responsesDiff` map without any synchronization (no mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the concurrent map writes trigger Go's built-in race detector which causes a `fatal error: concurrent map read and map write`, immediately killing the entire Hoverfly process. This is trivially exploitable by sending multiple simultaneous requests. Version 1.12.8 patches the issue.