Reported

November 21, 2017

Issued

October 1, 2020 (last modified: June 13, 2023)

Package

rmpv (crates.io)

Type

Vulnerability

Categories

• denial-of-service

Keywords

#memory #dos #msgpack #serialization #deserialization

Aliases

• GHSA-mcrf-7hf9-f6q5

References

• https://github.com/3Hren/msgpack-rust/issues/151

Patched

• >=0.4.2

Description

Affected versions of this crate pre-allocate memory on deserializing raw buffers without checking whether there is sufficient data available.

This allows an attacker to do denial-of-service attacks by sending small msgpack messages that allocate gigabytes of memory.

Advisory available under CC0-1.0 license.