CVE-2021-45719: Rusqlite Use After Free Vulnerability

HIGH
Advisory Identifier: GHSA-g87r-23vw-7f87
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CVSS 7.5
CWE-416
Published
Advisory Summary

CVE-2021-45719 is a HIGH (CVSS 7.5) use after free vulnerability (CWE-416: Use After Free) affecting Rusqlite libraries in the crates.io ecosystem. The issue involves use after free in rusqlite. Remediation is available by upgrading affected packages to version 0.25.4, 0.26.2.

CVE-2021-45719 at a Glance

CVE Identifier CVE-2021-45719
GHSA Identifier GHSA-g87r-23vw-7f87
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-416: Use After Free
Affected Product Rusqlite
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-2021-45719

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

rusqlite fixed: 0.25.4 
Upgrade rusqlite to 0.25.4
rusqlite fixed: 0.26.2 
Upgrade rusqlite to 0.26.2
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 rusqlite

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-45719, inspect your project dependencies for Rusqlite:

inspect dependencies for rusqlite

Analyze the terminal output to locate any version of Rusqlite in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.25.4), 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 Rusqlite, 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 rusqlite crate 0.25.x before 0.25.4 and 0.26.x before 0.26.2 for Rust. update_hook has a use-after-free.

CVE-2021-45719 Affected Rusqlite Versions

2 component(s)
Fixed Versions:
0.25.40.26.2
Product / Package Ecosystem Affected Versions Fixed Version
rusqlite
 crates.io
≥ 0.25.0
< 0.25.4
0.25.4
rusqlite
 crates.io
≥ 0.26.0
< 0.26.2
0.26.2

References

NVD — CVE-2021-45719 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45719
Rusqlite Source Repository REPOSITORY
https://github.com/rusqlite/rusqlite/issues/1048
Rusqlite Source Repository REPOSITORY
https://github.com/rusqlite/rusqlite
raw.githubusercontent.com/rustsec/advisory-db... WEB
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/rusqlite/RUSTSEC-2021-0128.md
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0128.html

Frequently Asked Questions

What is CVE-2021-45719?
CVE-2021-45719 is a security vulnerability in Rusqlite involving Use After Free in rusqlite under CWE-416: Use After Free.
Which Rusqlite versions are affected?
Affected versions include releases prior to 0.25.4, 0.26.2 across affected packages: rusqlite.
What version fixes CVE-2021-45719?
Upgrading to 0.25.4, 0.26.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rusqlite affected?
Yes, rusqlite is affected in releases prior to 0.25.4, 0.26.2. Upgrade your dependency to 0.25.4, 0.26.2 or later.
What is the CVSS score of CVE-2021-45719?
CVE-2021-45719 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-2021-45719?
CVE-2021-45719 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-2021-45719?
Run the dependency tree command: 'inspect dependencies for rusqlite'. 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-g87r-23vw-7f87",
  "modified" : "2022-01-06T20:20:42Z",
  "published" : "2022-01-06T22:00:21Z",
  "aliases" : [ "CVE-2021-45719" ],
  "summary" : "Use After Free in rusqlite",
  "details" : "An issue was discovered in the rusqlite crate 0.25.x before 0.25.4 and 0.26.x before 0.26.2 for Rust. update_hook has a use-after-free.",
  "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" : "rusqlite"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.25.0"
      }, {
        "fixed" : "0.25.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "rusqlite"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.26.0"
      }, {
        "fixed" : "0.26.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-45719"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rusqlite/rusqlite/issues/1048"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rusqlite/rusqlite"
  }, {
    "type" : "WEB",
    "url" : "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/rusqlite/RUSTSEC-2021-0128.md"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0128.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-05T21:01:21Z",
    "nvd_published_at" : "2021-12-26T22:15:00Z"
  }
}