CVE-2021-26306: Raw cpuid Soundness Issue Vulnerability

HIGH
Advisory Identifier: GHSA-hvqc-pc78-x9wh
CVSS 7.5
CWE-198 CWE-400
Published
Advisory Summary

CVE-2021-26306 is a HIGH (CVSS 7.5) soundness issue vulnerability (CWE-198: Use of Incorrect Byte Ordering) affecting Raw cpuid libraries in the crates.io ecosystem. The issue involves soundness issue in raw-cpuid. Remediation is available by upgrading affected packages to version 9.0.0.

CVE-2021-26306 at a Glance

CVE Identifier CVE-2021-26306
GHSA Identifier GHSA-hvqc-pc78-x9wh
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-198: Use of Incorrect Byte Ordering
Affected Product Raw cpuid
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2021-26306

To remediate this vulnerability, upgrade all affected Raw cpuid dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

raw-cpuid fixed: 9.0.0
Upgrade raw-cpuid to 9.0.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for raw-cpuid

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-26306, inspect your project dependencies for Raw cpuid:

inspect dependencies for raw-cpuid

Analyze the terminal output to locate any version of Raw cpuid in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.0.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-198: Use of Incorrect Byte Ordering, where the product receives input from an upstream component, but it does not account for byte ordering (e.g. big-endian and little-endian) when processing the input, causing an incorrect number or value to be used. In Raw cpuid, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

VendorInfo::as_string(), SoCVendorBrand::as_string(), and ExtendedFunctionInfo::processor_brand_string() construct byte slices using std::slice::from_raw_parts(), with data coming from #[repr(Rust)] structs. This is always undefined behavior. This flaw has been fixed in v9.0.0, by making the relevant structs #[repr(C)].

CVE-2021-26306 Affected Raw cpuid Versions

1 component(s)
Fixed Versions:
9.0.0
Product / Package Ecosystem Affected Versions Fixed Version
raw-cpuid
crates.io
< 9.0.0
9.0.0

References

Frequently Asked Questions

What is CVE-2021-26306?
CVE-2021-26306 is a security vulnerability in Raw cpuid involving Soundness issue in raw-cpuid under CWE-198: Use of Incorrect Byte Ordering.
Which Raw cpuid versions are affected?
Affected versions include releases prior to 9.0.0 across affected packages: raw-cpuid.
What version fixes CVE-2021-26306?
Upgrading to 9.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is raw-cpuid affected?
Yes, raw-cpuid is affected in releases prior to 9.0.0. Upgrade your dependency to 9.0.0 or later.
What is the CVSS score of CVE-2021-26306?
CVE-2021-26306 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2021-26306?
CVE-2021-26306 is classified under CWE-198: Use of Incorrect Byte Ordering (The product receives input from an upstream component, but it does not account for byte ordering (e.g. big-endian and little-endian) when processing the input, causing an incorrect number or value to be used.).
How can I check crates.io dependencies for CVE-2021-26306?
Run the dependency tree command: 'inspect dependencies for raw-cpuid'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hvqc-pc78-x9wh",
  "modified" : "2023-06-13T20:30:27Z",
  "published" : "2021-08-25T20:53:10Z",
  "aliases" : [ "CVE-2021-26306" ],
  "summary" : "Soundness issue in raw-cpuid",
  "details" : "VendorInfo::as_string(), SoCVendorBrand::as_string(), and ExtendedFunctionInfo::processor_brand_string() construct byte slices using std::slice::from_raw_parts(), with data coming from #[repr(Rust)] structs. This is always undefined behavior.\nThis flaw has been fixed in v9.0.0, by making the relevant structs #[repr(C)].",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "raw-cpuid"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-26306"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gz/rust-cpuid/issues/40"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/RustSec/advisory-db/pull/614"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gz/rust-cpuid"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0013.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-198", "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:02:19Z",
    "nvd_published_at" : "2021-01-29T03:15:00Z"
  }
}