Integer overflow in the bundled Brotli C library
A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB.
An updated version of brotli-sys has not been released. If one cannot update the C library, its authors recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.
In Rust the issue can be mitigated by migrating to the brotli crate, which provides a Rust implementation of Brotli compression and decompression that is not affected by this issue.
See advisory page for additional details.
brotli-sys0.3.2A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB.
An updated version of
brotli-syshas not been released. If one cannot update the C library, its authors recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.In Rust the issue can be mitigated by migrating to the
brotlicrate, which provides a Rust implementation of Brotli compression and decompression that is not affected by this issue.See advisory page for additional details.