GHSA-xrv3-jmcp-374j: Zerovec Zerovec Incorrectly Uses `#[repr(packed)]` Vulnerability

MODERATE
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CVSS 6.2
CWE-120
Published
Advisory Summary

GHSA-xrv3-jmcp-374j is a MODERATE (CVSS 6.2) zerovec incorrectly uses `#[repr(packed)]` vulnerability (CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')) affecting Zerovec libraries in the crates.io ecosystem. The issue involves zerovec incorrectly uses `#[repr(packed)]`. Remediation is available by upgrading affected packages to version 0.10.4, 0.9.7.

GHSA-xrv3-jmcp-374j at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-xrv3-jmcp-374j
Severity MODERATE
CVSS v3.1 Base Score 6.2
CWE Classification CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Product Zerovec
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 6.2

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix GHSA-xrv3-jmcp-374j

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

zerovec fixed: 0.10.4 
Upgrade zerovec to 0.10.4
zerovec fixed: 0.9.7 
Upgrade zerovec to 0.9.7
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 zerovec

How to Check if You Are Affected

To determine whether your application is affected by GHSA-xrv3-jmcp-374j, inspect your project dependencies for Zerovec:

inspect dependencies for zerovec

Analyze the terminal output to locate any version of Zerovec in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.10.4), 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-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), where the product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. In Zerovec, 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

The affected versions make unsafe memory accesses under the assumption that `#[repr(packed)]` has a guaranteed field order. The Rust specification does not guarantee this, and https://github.com/rust-lang/rust/pull/125360 (1.80.0-beta) starts reordering fields of `#[repr(packed)]` structs, leading to illegal memory accesses. The patched versions `0.9.7` and `0.10.4` use `#[repr(C, packed)]`, which guarantees field order.

GHSA-xrv3-jmcp-374j Affected Zerovec Versions

2 component(s)
Fixed Versions:
0.10.40.9.7
Product / Package Ecosystem Affected Versions Fixed Version
zerovec
 crates.io
≥ 0.10.0
< 0.10.4
0.10.4
zerovec
 crates.io
< 0.9.7
0.9.7

References

rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2024-0347.html

Frequently Asked Questions

What is GHSA-xrv3-jmcp-374j?
GHSA-xrv3-jmcp-374j is a security vulnerability in Zerovec involving zerovec incorrectly uses `#[repr(packed)]` under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow').
Which Zerovec versions are affected?
Affected versions include releases prior to 0.10.4, 0.9.7 across affected packages: zerovec.
What version fixes GHSA-xrv3-jmcp-374j?
Upgrading to 0.10.4, 0.9.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is zerovec affected?
Yes, zerovec is affected in releases prior to 0.10.4, 0.9.7. Upgrade your dependency to 0.10.4, 0.9.7 or later.
What is the CVSS score of GHSA-xrv3-jmcp-374j?
GHSA-xrv3-jmcp-374j has a CVSS v3.1 base score of 6.2 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with GHSA-xrv3-jmcp-374j?
GHSA-xrv3-jmcp-374j is classified under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.).
How can I check crates.io dependencies for GHSA-xrv3-jmcp-374j?
Run the dependency tree command: 'inspect dependencies for zerovec'. 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-xrv3-jmcp-374j",
  "modified" : "2024-07-08T18:36:40Z",
  "published" : "2024-07-08T18:36:40Z",
  "aliases" : [ ],
  "summary" : "zerovec incorrectly uses `#[repr(packed)]`",
  "details" : "The affected versions make unsafe memory accesses under the assumption that `#[repr(packed)]` has a guaranteed field order. \n\nThe Rust specification does not guarantee this, and https://github.com/rust-lang/rust/pull/125360 (1.80.0-beta) starts \nreordering fields of `#[repr(packed)]` structs, leading to illegal memory accesses.\n\nThe patched versions `0.9.7` and `0.10.4` use `#[repr(C, packed)]`, which guarantees field order.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerovec"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.10.0"
      }, {
        "fixed" : "0.10.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "zerovec"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2024-0347.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-120" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-07-08T18:36:40Z",
    "nvd_published_at" : null
  }
}