RUSTSEC-2021-0131

Source
https://rustsec.org/advisories/RUSTSEC-2021-0131
Import Source
https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2021-0131.json
Aliases
Published
2021-12-20T12:00:00Z
Modified
2023-12-06T01:00:42.246508Z
Summary
Integer overflow in the bundled Brotli C library
Details

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.

References

Affected packages

crates.io / brotli-sys

Package

Affected ranges

Type
SEMVER
Events
Introduced
0.0.0-0

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

Database specific

{
    "cvss": null,
    "informational": null,
    "categories": [
        "memory-corruption"
    ]
}