CVE Vulnerabilities

CVE-2021-26955

Unchecked Return Value

Published: Feb 09, 2021 | Modified: Feb 18, 2021
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because xcb::xproto::GetAtomNameReply::name() calls std::str::from_utf8_unchecked() on unvalidated bytes from an X server.

Weakness

The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.

Affected Software

Name Vendor Start Version End Version
Xcb Xcb_project * 2021-02-04 (including)
Rust-xcb Ubuntu groovy *
Rust-xcb Ubuntu hirsute *
Rust-xcb Ubuntu impish *
Rust-xcb Ubuntu kinetic *
Rust-xcb Ubuntu lunar *
Rust-xcb Ubuntu mantic *
Rust-xcb Ubuntu trusty *

Potential Mitigations

References