CVE-2021-28036: Quinn :net::SocketAddr Vulnerability

HIGH
Advisory Identifier: GHSA-fhv4-fx3v-77w6
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CVSS 7.5
CWE-119
Published
Advisory Summary

CVE-2021-28036 is a HIGH (CVSS 7.5) :net::socketaddr vulnerability (CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer) affecting Quinn libraries in the crates.io ecosystem. The issue involves :net::socketaddr. Remediation is available by upgrading affected packages to version 0.5.4, 0.6.2.

CVE-2021-28036 at a Glance

CVE Identifier CVE-2021-28036
GHSA Identifier GHSA-fhv4-fx3v-77w6
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Product Quinn
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:H/I:N/A:N).

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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2021-28036

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

quinn fixed: 0.5.4 
Upgrade quinn to 0.5.4
quinn fixed: 0.6.2 
Upgrade quinn to 0.6.2
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 quinn

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-28036, inspect your project dependencies for Quinn:

inspect dependencies for quinn

Analyze the terminal output to locate any version of Quinn in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.4), 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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer, where the product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. this may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. In Quinn, 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 quinn crate has assumed std::net::SocketAddrV4 and std::net::SocketAddrV6 have the same memory layout as the system C representation sockaddr. It has simply casted the pointers to convert the socket addresses to the system representation. The standard library does not say anything about the memory layout, and this will cause invalid memory access if the standard library changes the implementation. No warnings or errors will be emitted once the change happens.

CVE-2021-28036 Affected Quinn Versions

2 component(s)
Fixed Versions:
0.5.40.6.2
Product / Package Ecosystem Affected Versions Fixed Version
quinn
 crates.io
< 0.5.4
0.5.4
quinn
 crates.io
≥ 0.6.0
< 0.6.2
0.6.2

References

NVD — CVE-2021-28036 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28036
Quinn Source Repository REPOSITORY
https://github.com/quinn-rs/quinn/issues/968
Quinn Source Repository REPOSITORY
https://github.com/quinn-rs/quinn
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0035.html

Frequently Asked Questions

What is CVE-2021-28036?
CVE-2021-28036 is a security vulnerability in Quinn involving :net::SocketAddr under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer.
Which Quinn versions are affected?
Affected versions include releases prior to 0.5.4, 0.6.2 across affected packages: quinn.
What version fixes CVE-2021-28036?
Upgrading to 0.5.4, 0.6.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is quinn affected?
Yes, quinn is affected in releases prior to 0.5.4, 0.6.2. Upgrade your dependency to 0.5.4, 0.6.2 or later.
What is the CVSS score of CVE-2021-28036?
CVE-2021-28036 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:H/I:N/A:N.
What CWE is associated with CVE-2021-28036?
CVE-2021-28036 is classified under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer (The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.).
How can I check crates.io dependencies for CVE-2021-28036?
Run the dependency tree command: 'inspect dependencies for quinn'. 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-fhv4-fx3v-77w6",
  "modified" : "2023-06-13T20:31:29Z",
  "published" : "2021-08-25T20:52:05Z",
  "aliases" : [ "CVE-2021-28036" ],
  "summary" : "quinn invalidly assumes the memory layout of std::net::SocketAddr",
  "details" : "The quinn crate has assumed std::net::SocketAddrV4 and std::net::SocketAddrV6 have the same memory layout as the system C representation sockaddr. It has simply casted the pointers to convert the socket addresses to the system representation. The standard library does not say anything about the memory layout, and this will cause invalid memory access if the standard library changes the implementation. No warnings or errors will be emitted once the change happens.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "quinn"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "quinn"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.6.0"
      }, {
        "fixed" : "0.6.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-28036"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/quinn-rs/quinn/issues/968"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/quinn-rs/quinn"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0035.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-119" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T17:25:47Z",
    "nvd_published_at" : null
  }
}