CVE-2021-26307: Raw cpuid Error On Unsupported Architectures Vulnerability

MODERATE
Advisory Identifier: GHSA-jrf8-cmgg-gv2m
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CVSS 5.5
CWE-400 CWE-657
Published
Advisory Summary

CVE-2021-26307 is a MODERATE (CVSS 5.5) error on unsupported architectures vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Raw cpuid libraries in the crates.io ecosystem. The issue involves error on unsupported architectures in raw-cpuid. Remediation is available by upgrading affected packages to version 9.0.0.

CVE-2021-26307 at a Glance

CVE Identifier CVE-2021-26307
GHSA Identifier GHSA-jrf8-cmgg-gv2m
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Raw cpuid
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2021-26307

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-2021-26307, 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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

native_cpuid::cpuid_count() exposes the unsafe __cpuid_count() intrinsic from core::arch::x86 or core::arch::x86_64 as a safe function, and uses it internally, without checking the safety requirement: * The CPU the program is currently running on supports the function being called. CPUID is available in most, but not all, x86/x86_64 environments. The crate compiles only on these architectures, so others are unaffected. This issue is mitigated by the fact that affected programs are expected to crash deterministically every time. The flaw has been fixed in v9.0.0, by intentionally breaking compilation when targeting SGX or 32-bit x86 without SSE. This covers all affected CPUs.

CVE-2021-26307 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

NVD — CVE-2021-26307 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26307
Raw cpuid Source Repository REPOSITORY
https://github.com/gz/rust-cpuid/issues/40
Raw cpuid Source Repository REPOSITORY
https://github.com/gz/rust-cpuid/issues/41
Raw cpuid Source Repository REPOSITORY
https://github.com/RustSec/advisory-db/pull/614
Security Fix Commit FIX COMMIT
https://github.com/gz/rust-cpuid/commit/91b676eecd01f2163e2984215e2c0ac89e30ce75
Raw cpuid Source Repository REPOSITORY
https://github.com/gz/rust-cpuid
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0013.html

Frequently Asked Questions

What is CVE-2021-26307?
CVE-2021-26307 is a security vulnerability in Raw cpuid involving Error on unsupported architectures in raw-cpuid under CWE-400: Uncontrolled Resource Consumption.
Which Raw cpuid versions are affected?
Affected versions include releases prior to 9.0.0 across affected packages: raw-cpuid.
What version fixes CVE-2021-26307?
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-2021-26307?
CVE-2021-26307 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2021-26307?
CVE-2021-26307 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check crates.io dependencies for CVE-2021-26307?
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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jrf8-cmgg-gv2m",
  "modified" : "2023-06-13T20:29:54Z",
  "published" : "2021-08-25T20:53:07Z",
  "aliases" : [ "CVE-2021-26307" ],
  "summary" : "Error on unsupported architectures in raw-cpuid",
  "details" : "native_cpuid::cpuid_count() exposes the unsafe __cpuid_count() intrinsic from core::arch::x86 or core::arch::x86_64 as a safe function, and uses it internally, without checking the safety requirement:\n\n* The CPU the program is currently running on supports the function being called.\n\nCPUID is available in most, but not all, x86/x86_64 environments. The crate compiles only on these architectures, so others are unaffected. This issue is mitigated by the fact that affected programs are expected to crash deterministically every time.\n\nThe flaw has been fixed in v9.0.0, by intentionally breaking compilation when targeting SGX or 32-bit x86 without SSE. This covers all affected CPUs.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/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-2021-26307"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gz/rust-cpuid/issues/40"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gz/rust-cpuid/issues/41"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/RustSec/advisory-db/pull/614"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gz/rust-cpuid/commit/91b676eecd01f2163e2984215e2c0ac89e30ce75"
  }, {
    "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-400", "CWE-657" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:02:32Z",
    "nvd_published_at" : "2021-01-29T03:15:00Z"
  }
}