RUSTSEC-2020-0120

Decoder<R> can carry R: !Send to other threads

Reported

November 10, 2020

Issued

January 25, 2021 (last modified: October 19, 2021)

Package

libsbc (crates.io)

Type

INFO Unsound

Categories

Aliases

CVE-2020-36440

Details

https://github.com/mvertescher/libsbc-rs/issues/4

CVSS Score

8.1 HIGH

CVSS Details

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Patched

>=0.1.5

Description

Affected versions of this crate implements Send for Decoder<R> for any R: Read. This allows Decoder<R> to contain R: !Send and carry (move) it to another thread.

This can result in undefined behavior such as memory corruption from data race on R, or dropping R = MutexGuard<_> from a thread that didn't lock the mutex.

The flaw was corrected in commit a34d6e1 by adding trait bound R: Send to the Send impl for Decoder<R>.