CVE-2021-26955
Multiple soundness issues
9.8
CRITICAL
CVSS 3.1
EPSS 1.7%
Description
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.
How to fix CVE-2021-26955
To remediate CVE-2021-26955, upgrade the affected package to a fixed version below.
- Debian/rust-xcb—upgrade to 1.1.1-1 or later
- —upgrade to 1.0.0 or later
- —upgrade to 1.0.0 or later
- —upgrade to 1.0.0 or later
- —upgrade to 1.0.0 or later
- —upgrade to 1.0.0 or later
Is CVE-2021-26955 being exploited?
Low — EPSS is 1.7%, meaning exploitation activity has not been observed at scale.
Affected packages (6)
- from 0, < 1.1.1-1
- from 0, < 1.0.0
- from 0, < 1.0.0
- from 0, < 1.0.0
- from 0, < 1.0.0
- >= 0.0.0-0, < 1.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |