CVE-2021-28305: Diesel Fix A Use-after-free Bug Vulnerability

CRITICAL
Advisory Identifier: GHSA-j8q9-5rp9-4mv9
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CVSS 9.8
CWE-416
Published
Advisory Summary

CVE-2021-28305 is a CRITICAL (CVSS 9.8) fix a use-after-free bug vulnerability (CWE-416: Use After Free) affecting Diesel libraries in the crates.io ecosystem. The issue involves fix a use-after-free bug in diesels sqlite backend. Remediation is available by upgrading affected packages to version 1.4.6.

CVE-2021-28305 at a Glance

CVE Identifier CVE-2021-28305
GHSA Identifier GHSA-j8q9-5rp9-4mv9
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-416: Use After Free
Affected Product Diesel
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-2021-28305

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

diesel fixed: 1.4.6 
Upgrade diesel to 1.4.6
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 diesel

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-28305, inspect your project dependencies for Diesel:

inspect dependencies for diesel

Analyze the terminal output to locate any version of Diesel in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.6), 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-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. In Diesel, 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 diesel crate before 1.4.6 for Rust. There is a use-after-free in the SQLite backend because the semantics of sqlite3_column_name are not followed.

CVE-2021-28305 Affected Diesel Versions

1 component(s)
Fixed Versions:
1.4.6
Product / Package Ecosystem Affected Versions Fixed Version
diesel
 crates.io
< 1.4.6
1.4.6

References

NVD — CVE-2021-28305 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28305
Diesel Source Repository REPOSITORY
https://github.com/diesel-rs/diesel/pull/2663
Diesel Source Repository REPOSITORY
https://github.com/diesel-rs/diesel
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0037.html

Frequently Asked Questions

What is CVE-2021-28305?
CVE-2021-28305 is a security vulnerability in Diesel involving Fix a use-after-free bug in diesels Sqlite backend under CWE-416: Use After Free.
Which Diesel versions are affected?
Affected versions include releases prior to 1.4.6 across affected packages: diesel.
What version fixes CVE-2021-28305?
Upgrading to 1.4.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is diesel affected?
Yes, diesel is affected in releases prior to 1.4.6. Upgrade your dependency to 1.4.6 or later.
What is the CVSS score of CVE-2021-28305?
CVE-2021-28305 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-2021-28305?
CVE-2021-28305 is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check crates.io dependencies for CVE-2021-28305?
Run the dependency tree command: 'inspect dependencies for diesel'. 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-j8q9-5rp9-4mv9",
  "modified" : "2022-06-16T23:50:24Z",
  "published" : "2022-05-24T17:44:31Z",
  "aliases" : [ "CVE-2021-28305" ],
  "summary" : "Fix a use-after-free bug in diesels Sqlite backend",
  "details" : "An issue was discovered in the diesel crate before 1.4.6 for Rust. There is a use-after-free in the SQLite backend because the semantics of sqlite3_column_name are not followed.",
  "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" : "diesel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-28305"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/diesel-rs/diesel/pull/2663"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/diesel-rs/diesel"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0037.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-16T23:50:24Z",
    "nvd_published_at" : "2021-03-12T09:15:00Z"
  }
}