CVE-2020-36209: Late static Data Races Vulnerability

HIGH
Advisory Identifier: GHSA-wr55-mf5c-hhwm
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CVSS 7.0
CWE-662
Published
Advisory Summary

CVE-2020-36209 is a HIGH (CVSS 7.0) data races vulnerability (CWE-662: Improper Synchronization) affecting Late static libraries in the crates.io ecosystem. The issue involves data races in late-static. Remediation is available by upgrading affected packages to version 0.4.0.

CVE-2020-36209 at a Glance

CVE Identifier CVE-2020-36209
GHSA Identifier GHSA-wr55-mf5c-hhwm
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-662: Improper Synchronization
Affected Product Late static
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.0

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

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
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-2020-36209

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

late-static fixed: 0.4.0 
Upgrade late-static to 0.4.0
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 late-static

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36209, inspect your project dependencies for Late static:

inspect dependencies for late-static

Analyze the terminal output to locate any version of Late static in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.0), 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-662: Improper Synchronization, where the product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. In Late static, 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

Affected versions of this crate implemented Sync for LateStatic with T: Send, so that it is possible to create a data race to a type T: Send + !Sync (e.g. Cell<T>). This can result in a memory corruption or other kinds of undefined behavior. The flaw was corrected in commit 11f396c by replacing the T: Send bound to T: Sync bound in the Sync impl for LateStatic<T>.

CVE-2020-36209 Affected Late static Versions

1 component(s)
Fixed Versions:
0.4.0
Product / Package Ecosystem Affected Versions Fixed Version
late-static
 crates.io
< 0.4.0
0.4.0

References

NVD — CVE-2020-36209 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36209
Late static Source Repository REPOSITORY
https://github.com/Richard-W/late-static/issues/1
Security Fix Commit FIX COMMIT
https://github.com/Richard-W/late-static/commit/11f396c
Late static Source Repository REPOSITORY
https://github.com/Richard-W/late-static
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0102.html

Frequently Asked Questions

What is CVE-2020-36209?
CVE-2020-36209 is a security vulnerability in Late static involving Data races in late-static under CWE-662: Improper Synchronization.
Which Late static versions are affected?
Affected versions include releases prior to 0.4.0 across affected packages: late-static.
What version fixes CVE-2020-36209?
Upgrading to 0.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is late-static affected?
Yes, late-static is affected in releases prior to 0.4.0. Upgrade your dependency to 0.4.0 or later.
What is the CVSS score of CVE-2020-36209?
CVE-2020-36209 has a CVSS v3.1 base score of 7.0 (HIGH) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-36209?
CVE-2020-36209 is classified under CWE-662: Improper Synchronization (The product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.).
How can I check crates.io dependencies for CVE-2020-36209?
Run the dependency tree command: 'inspect dependencies for late-static'. 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-wr55-mf5c-hhwm",
  "modified" : "2023-06-13T18:16:02Z",
  "published" : "2021-08-25T20:50:44Z",
  "aliases" : [ "CVE-2020-36209" ],
  "summary" : "Data races in late-static",
  "details" : "Affected versions of this crate implemented Sync for LateStatic with T: Send, so that it is possible to create a data race to a type T: Send + !Sync (e.g. Cell<T>).\n\nThis can result in a memory corruption or other kinds of undefined behavior.\n\nThe flaw was corrected in commit 11f396c by replacing the T: Send bound to T: Sync bound in the Sync impl for LateStatic<T>.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "late-static"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36209"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Richard-W/late-static/issues/1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Richard-W/late-static/commit/11f396c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Richard-W/late-static"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0102.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-662" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:52:13Z",
    "nvd_published_at" : null
  }
}