CVE-2021-26955: Unchecked Return Value in xcb

August 25, 2021

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.

References

github.com/RustSec/advisory-db/issues/653
github.com/advisories/GHSA-3288-cwgw-ch86
github.com/rtbo/rust-xcb
nvd.nist.gov/vuln/detail/CVE-2021-26955
rustsec.org/advisories/RUSTSEC-2021-0019.html

Code Behaviors & Features

Detect and mitigate CVE-2021-26955 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →