CVE-2021-29936: Adtensor Free Of Uninitialized Memory Vulnerability

CRITICAL
Advisory Identifier: GHSA-rg4m-gww5-7p47
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CVSS 9.8
CWE-908
Published
Advisory Summary

CVE-2021-29936 is a CRITICAL (CVSS 9.8) free of uninitialized memory vulnerability (CWE-908: Use of Uninitialized Resource) affecting Adtensor libraries in the crates.io ecosystem. The issue involves free of uninitialized memory in adtensor. Remediation is available in the latest vendor maintenance releases.

CVE-2021-29936 at a Glance

CVE Identifier CVE-2021-29936
GHSA Identifier GHSA-rg4m-gww5-7p47
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-908: Use of Uninitialized Resource
Affected Product Adtensor
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-29936

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

adtensor fixed: Latest secure release 
Upgrade adtensor to Latest secure release
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 adtensor

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-29936, inspect your project dependencies for Adtensor:

inspect dependencies for adtensor

Analyze the terminal output to locate any version of Adtensor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-908: Use of Uninitialized Resource, where the product uses or accesses a resource that has not been initialized. In Adtensor, 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

An issue was discovered in the adtensor crate through 0.0.3 for Rust. There is a drop of uninitialized memory via the FromIterator implementation for Vector and Matrix.

CVE-2021-29936 Affected Adtensor Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
adtensor
 crates.io
≤ 0.0.3

References

NVD — CVE-2021-29936 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29936
Adtensor Source Repository REPOSITORY
https://github.com/charles-r-earp/adtensor/issues/4
Adtensor Source Repository REPOSITORY
https://github.com/charles-r-earp/adtensor
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0045.html

Frequently Asked Questions

What is CVE-2021-29936?
CVE-2021-29936 is a security vulnerability in Adtensor involving Free of uninitialized memory in adtensor under CWE-908: Use of Uninitialized Resource.
Which Adtensor versions are affected?
Affected versions include releases prior to current release patches across affected packages: adtensor.
What version fixes CVE-2021-29936?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is adtensor affected?
Yes, adtensor is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-29936?
CVE-2021-29936 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-29936?
CVE-2021-29936 is classified under CWE-908: Use of Uninitialized Resource (The product uses or accesses a resource that has not been initialized.).
How can I check crates.io dependencies for CVE-2021-29936?
Run the dependency tree command: 'inspect dependencies for adtensor'. 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-rg4m-gww5-7p47",
  "modified" : "2021-08-19T17:14:41Z",
  "published" : "2021-08-25T20:54:18Z",
  "aliases" : [ "CVE-2021-29936" ],
  "summary" : "Free of uninitialized memory in adtensor",
  "details" : "An issue was discovered in the adtensor crate through 0.0.3 for Rust. There is a drop of uninitialized memory via the FromIterator implementation for Vector and Matrix.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "adtensor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-29936"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/charles-r-earp/adtensor/issues/4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/charles-r-earp/adtensor"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0045.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-908" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T17:14:41Z",
    "nvd_published_at" : null
  }
}