CVE-2021-38192: Prost types Overflow Vulnerability

HIGH
Advisory Identifier: GHSA-x4qm-mcjq-v2gf
Share
CVSS 7.5
CWE-190 CWE-120
Published
Advisory Summary

CVE-2021-38192 is a HIGH (CVSS 7.5) overflow vulnerability (CWE-190: Integer Overflow or Wraparound) affecting Prost types libraries in the crates.io ecosystem. The issue involves overflow in prost-types. Remediation is available by upgrading affected packages to version 0.8.0.

CVE-2021-38192 at a Glance

CVE Identifier CVE-2021-38192
GHSA Identifier GHSA-x4qm-mcjq-v2gf
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-190: Integer Overflow or Wraparound
Affected Product Prost types
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-2021-38192

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

prost-types fixed: 0.8.0 
Upgrade prost-types to 0.8.0
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 prost-types

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-38192, inspect your project dependencies for Prost types:

inspect dependencies for prost-types

Analyze the terminal output to locate any version of Prost types in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.8.0), 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-190: Integer Overflow or Wraparound, where the product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. this occurs when an integer value is incremented to a value that is too large to store in the associated representation. when this occurs, the value may become a very small or negative number. In Prost types, 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 contained a bug in which untrusted input could cause an overflow and panic when converting a Timestamp to SystemTime. It is recommended to upgrade to prost-types v0.8 and switch the usage of From<Timestamp> for SystemTime to TryFrom<Timestamp> for SystemTime.

CVE-2021-38192 Affected Prost types Versions

1 component(s)
Fixed Versions:
0.8.0
Product / Package Ecosystem Affected Versions Fixed Version
prost-types
 crates.io
< 0.8.0
0.8.0

References

NVD — CVE-2021-38192 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-38192
Prost types Source Repository REPOSITORY
https://github.com/tokio-rs/prost/issues/438
Prost types Source Repository REPOSITORY
https://github.com/tokio-rs/prost/pull/439
Security Fix Commit FIX COMMIT
https://github.com/tokio-rs/prost/commit/59f2a7311dd6540696bfd0145f5281ce495f4385
Prost types Source Repository REPOSITORY
https://github.com/tokio-rs/prost/tree/master/prost-types
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0073.html

Frequently Asked Questions

What is CVE-2021-38192?
CVE-2021-38192 is a security vulnerability in Prost types involving Overflow in prost-types under CWE-190: Integer Overflow or Wraparound.
Which Prost types versions are affected?
Affected versions include releases prior to 0.8.0 across affected packages: prost-types.
What version fixes CVE-2021-38192?
Upgrading to 0.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is prost-types affected?
Yes, prost-types is affected in releases prior to 0.8.0. Upgrade your dependency to 0.8.0 or later.
What is the CVSS score of CVE-2021-38192?
CVE-2021-38192 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-2021-38192?
CVE-2021-38192 is classified under CWE-190: Integer Overflow or Wraparound (The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.).
How can I check crates.io dependencies for CVE-2021-38192?
Run the dependency tree command: 'inspect dependencies for prost-types'. 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-x4qm-mcjq-v2gf",
  "modified" : "2023-06-13T20:26:47Z",
  "published" : "2021-08-25T20:55:53Z",
  "aliases" : [ "CVE-2021-38192" ],
  "summary" : "Overflow in prost-types",
  "details" : "Affected versions of this crate contained a bug in which untrusted input could cause an overflow and panic when converting a Timestamp to SystemTime. It is recommended to upgrade to prost-types v0.8 and switch the usage of From<Timestamp> for SystemTime to TryFrom<Timestamp> for SystemTime.",
  "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" : "prost-types"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-38192"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tokio-rs/prost/issues/438"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tokio-rs/prost/pull/439"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tokio-rs/prost/commit/59f2a7311dd6540696bfd0145f5281ce495f4385"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tokio-rs/prost/tree/master/prost-types"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0073.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-120", "CWE-190" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-18T21:29:54Z",
    "nvd_published_at" : "2021-08-08T06:15:00Z"
  }
}