RUSTSEC-2020-0048

Use-after-free in BodyStream due to lack of pinning

Reported

January 24, 2020

Issued

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

Package

actix-http (crates.io)

Type

Vulnerability

Categories

memory-corruption

Aliases

References

https://github.com/actix/actix-web/issues/1321

CVSS Score

7.5 HIGH

CVSS Details

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: High

CVSS Vector

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

Patched

>=2.0.0-alpha.1

Description

Affected versions of this crate did not require the buffer wrapped in BodyStream to be pinned, but treated it as if it had a fixed location in memory. This may result in a use-after-free.

The flaw was corrected by making the trait MessageBody require Unpin and making poll_next() function accept Pin<&mut Self> instead of &mut self.

Advisory available under CC0-1.0 license.