# Facebook Fizz integer overflow vulnerability (CVE-2019-3560)

Use [this snapshot](https://github.com/github/securitylab/releases/download/facebook-codeql-database/facebookincubator_fizz_cpp-srcVersion_c69ad1baf3f04620393ebadc3eedd130b74f4023-dist_odasa-lgtm-2019-01-13-f9dca2a-universal.zip) for the demo.

[Fizz](https://github.com/facebookincubator/fizz) contained a remotely triggerable infinite loop. For more details about the bug, see this [blog post](https://securitylab.github.com/research/facebook-fizz-CVE-2019-3560). A proof-of-concept exploit is available [here](https://github.com/github/securitylab/tree/95c0bcc670f3b3d98a4d578f8993f8138092b94f/SecurityExploits/Facebook/Fizz/CVE-2019-3560).