CVE-2020-36213: Abi stable :retain Vulnerability

HIGH
Advisory Identifier: GHSA-wqxc-qrq4-w5v4
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CVSS 7.5
CWE-172
Published
Advisory Summary

CVE-2020-36213 is a HIGH (CVSS 7.5) :retain vulnerability (CWE-172: Encoding Error) affecting Abi stable libraries in the crates.io ecosystem. The issue involves :retain. Remediation is available by upgrading affected packages to version 0.9.1.

CVE-2020-36213 at a Glance

CVE Identifier CVE-2020-36213
GHSA Identifier GHSA-wqxc-qrq4-w5v4
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-172: Encoding Error
Affected Product Abi stable
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-2020-36213

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

abi_stable fixed: 0.9.1 
Upgrade abi_stable to 0.9.1
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 abi_stable

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36213, inspect your project dependencies for Abi stable:

inspect dependencies for abi_stable

Analyze the terminal output to locate any version of Abi stable in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.1), 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-172: Encoding Error, where the product does not properly encode or decode the data, resulting in unexpected values. In Abi stable, 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 abi_stable crate before 0.9.1 for Rust. A retain call can create an invalid UTF-8 string, violating soundness.

CVE-2020-36213 Affected Abi stable Versions

1 component(s)
Fixed Versions:
0.9.1
Product / Package Ecosystem Affected Versions Fixed Version
abi_stable
 crates.io
< 0.9.1
0.9.1

References

NVD — CVE-2020-36213 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36213
Abi stable Source Repository REPOSITORY
https://github.com/rodrimati1992/abi_stable_crates/issues/44
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0105.html

Frequently Asked Questions

What is CVE-2020-36213?
CVE-2020-36213 is a security vulnerability in Abi stable involving :retain under CWE-172: Encoding Error.
Which Abi stable versions are affected?
Affected versions include releases prior to 0.9.1 across affected packages: abi_stable.
What version fixes CVE-2020-36213?
Upgrading to 0.9.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is abi_stable affected?
Yes, abi_stable is affected in releases prior to 0.9.1. Upgrade your dependency to 0.9.1 or later.
What is the CVSS score of CVE-2020-36213?
CVE-2020-36213 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-2020-36213?
CVE-2020-36213 is classified under CWE-172: Encoding Error (The product does not properly encode or decode the data, resulting in unexpected values.).
How can I check crates.io dependencies for CVE-2020-36213?
Run the dependency tree command: 'inspect dependencies for abi_stable'. 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-wqxc-qrq4-w5v4",
  "modified" : "2022-06-15T19:41:46Z",
  "published" : "2021-08-25T21:01:33Z",
  "aliases" : [ "CVE-2020-36213" ],
  "summary" : "Update unsound DrainFilter and RString::retain",
  "details" : "An issue was discovered in the abi_stable crate before 0.9.1 for Rust. A retain call can create an invalid UTF-8 string, violating soundness.",
  "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" : "abi_stable"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36213"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rodrimati1992/abi_stable_crates/issues/44"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0105.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-172" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-07-26T17:18:54Z",
    "nvd_published_at" : "2021-01-26T18:15:00Z"
  }
}