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CVE-2021-26955

Date: February 9, 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.

Language: RUST

Severity Score

Related Resources (8)

https://github.com/rtbo/rust-xcb
https://rustsec.org/advisories/RUSTSEC-2021-0019.html
https://nvd.nist.gov/vuln/detail/CVE-2021-26956
https://nvd.nist.gov/vuln/detail/CVE-2021-26955
https://github.com/RustSec/advisory-db/issues/653
https://github.com/rust-x-bindings/rust-xcb/issues/95
https://nvd.nist.gov/vuln/detail/CVE-2021-26958
https://www.mend.io/vulnerability-database/CVE-2021-26955

Severity Score

Weakness Type (CWE)

Unchecked Return Value

CWE-252

Violation of Secure Design Principles

CWE-657

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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