GHSA-3mv5-343c-w2qg: Zerocopy :Ref Or Cell::RefMut Vulnerability

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Advisory Summary

GHSA-3mv5-343c-w2qg is a LOW :ref or cell::refmut vulnerability (General Security Weakness) affecting Zerocopy libraries in the crates.io ecosystem. The issue involves :ref or cell::refmut. Remediation is available by upgrading affected packages to version 0.2.9, 0.3.2, 0.4.1, 0.5.2, 0.6.6, 0.7.31.

GHSA-3mv5-343c-w2qg at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-3mv5-343c-w2qg
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Zerocopy
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-3mv5-343c-w2qg

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

zerocopy fixed: 0.2.9 
Upgrade zerocopy to 0.2.9
zerocopy fixed: 0.3.2 
Upgrade zerocopy to 0.3.2
zerocopy fixed: 0.4.1 
Upgrade zerocopy to 0.4.1
zerocopy fixed: 0.5.2 
Upgrade zerocopy to 0.5.2
zerocopy fixed: 0.6.6 
Upgrade zerocopy to 0.6.6
zerocopy fixed: 0.7.31 
Upgrade zerocopy to 0.7.31
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 zerocopy

How to Check if You Are Affected

To determine whether your application is affected by GHSA-3mv5-343c-w2qg, inspect your project dependencies for Zerocopy:

inspect dependencies for zerocopy

Analyze the terminal output to locate any version of Zerocopy in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.2.9), 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 General Security Weakness. In Zerocopy, 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

*This advisory is also published as [RUSTSEC-2023-0074](https://rustsec.org/advisories/RUSTSEC-2023-0074.html).* The `Ref` methods `into_ref`, `into_mut`, `into_slice`, and `into_slice_mut` are unsound and may allow safe code to exhibit undefined behavior when used with `Ref<B, T>` where `B` is [`cell::Ref`](https://doc.rust-lang.org/core/cell/struct.Ref.html) or [`cell::RefMut`](https://doc.rust-lang.org/core/cell/struct.RefMut.html). Note that these methods remain sound when used with `B` types other than `cell::Ref` or `cell::RefMut`. See https://github.com/google/zerocopy/issues/716 for a more in-depth analysis. The current plan is to yank the affected versions soon. See https://github.com/google/zerocopy/issues/679 for more detail.

GHSA-3mv5-343c-w2qg Affected Zerocopy Versions

6 component(s)
Fixed Versions:
0.2.90.3.20.4.10.5.20.6.60.7.31
Product / Package Ecosystem Affected Versions Fixed Version
zerocopy
 crates.io
≥ 0.2.2
< 0.2.9
0.2.9
zerocopy
 crates.io
≥ 0.3.0
< 0.3.2
0.3.2
zerocopy
 crates.io
≥ 0.4.0
< 0.4.1
All 1 versions
0.4.0
0.4.1
zerocopy
 crates.io
≥ 0.5.0
< 0.5.2
0.5.2
zerocopy
 crates.io
≥ 0.6.0
< 0.6.6
0.6.6
zerocopy
 crates.io
≥ 0.7.0
< 0.7.31
0.7.31

References

GitHub Advisory / Wiki ADVISORY
https://github.com/google/zerocopy/security/advisories/GHSA-3mv5-343c-w2qg
Zerocopy Source Repository REPOSITORY
https://github.com/google/zerocopy/issues/679
Zerocopy Source Repository REPOSITORY
https://github.com/google/zerocopy/issues/716
Zerocopy Source Repository REPOSITORY
https://github.com/google/zerocopy
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2023-0074.html

Frequently Asked Questions

What is GHSA-3mv5-343c-w2qg?
GHSA-3mv5-343c-w2qg is a security vulnerability in Zerocopy involving :Ref or cell::RefMut under General Security Weakness.
Which Zerocopy versions are affected?
Affected versions include releases prior to 0.2.9, 0.3.2, 0.4.1, 0.5.2, 0.6.6, 0.7.31 across affected packages: zerocopy.
What version fixes GHSA-3mv5-343c-w2qg?
Upgrading to 0.2.9, 0.3.2, 0.4.1, 0.5.2, 0.6.6, 0.7.31 (or the latest patched release for your respective branch) resolves the vulnerability.
Is zerocopy affected?
Yes, zerocopy is affected in releases prior to 0.2.9, 0.3.2, 0.4.1, 0.5.2, 0.6.6, 0.7.31. Upgrade your dependency to 0.2.9, 0.3.2, 0.4.1, 0.5.2, 0.6.6, 0.7.31 or later.
What CWE is associated with GHSA-3mv5-343c-w2qg?
GHSA-3mv5-343c-w2qg is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-3mv5-343c-w2qg?
Run the dependency tree command: 'inspect dependencies for zerocopy'. 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-3mv5-343c-w2qg",
  "modified" : "2024-02-12T15:57:36Z",
  "published" : "2023-12-15T03:48:38Z",
  "aliases" : [ ],
  "summary" : "Ref methods into_ref, into_mut, into_slice, and into_slice_mut are unsound when used with cell::Ref or cell::RefMut",
  "details" : "*This advisory is also published as [RUSTSEC-2023-0074](https://rustsec.org/advisories/RUSTSEC-2023-0074.html).*\n\nThe `Ref` methods `into_ref`, `into_mut`, `into_slice`, and `into_slice_mut` are unsound and may allow safe code to exhibit undefined behavior when used with `Ref<B, T>` where `B` is [`cell::Ref`](https://doc.rust-lang.org/core/cell/struct.Ref.html) or [`cell::RefMut`](https://doc.rust-lang.org/core/cell/struct.RefMut.html). Note that these methods remain sound when used with `B` types other than `cell::Ref` or `cell::RefMut`.\n\nSee https://github.com/google/zerocopy/issues/716 for a more in-depth analysis.\n\nThe current plan is to yank the affected versions soon. See https://github.com/google/zerocopy/issues/679 for more detail.\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerocopy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.2.2"
      }, {
        "fixed" : "0.2.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerocopy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.3.0"
      }, {
        "fixed" : "0.3.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
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    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.4.0"
      }, {
        "fixed" : "0.4.1"
      } ]
    } ],
    "versions" : [ "0.4.0" ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerocopy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.5.0"
      }, {
        "fixed" : "0.5.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerocopy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.6.0"
      }, {
        "fixed" : "0.6.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerocopy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.7.0"
      }, {
        "fixed" : "0.7.31"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/google/zerocopy/security/advisories/GHSA-3mv5-343c-w2qg"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/zerocopy/issues/679"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/zerocopy/issues/716"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/google/zerocopy"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2023-0074.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-15T03:48:38Z",
    "nvd_published_at" : null
  }
}