Reported

December 10, 2020

Issued

January 18, 2021 (last modified: June 13, 2023)

Package

xcb (crates.io)

Type

INFO Unsound

Categories

• memory-corruption
• thread-safety

Aliases

• CVE-2020-36205
• GHSA-c8hq-x4mm-p6q6

References

• https://github.com/rust-x-bindings/rust-xcb/issues/93

CVSS Score

5.5 MEDIUM

CVSS Details

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS Vector

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

Patched

• >=1.0

Description

base::Error type contains public field named ptr. With this definition, it is possible to create a base::Error with an invalid pointer and trigger memory safety errors such as use-after-free or double-free with safe Rust.

The users of xcb crate are advised not to manipulate the field.

Advisory available under CC0-1.0 license.