CVE-2021-29932: Parse duration Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-qpgv-g792-wh6x
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2021-29932 is a HIGH (CVSS 7.5) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Parse duration libraries in the crates.io ecosystem. The issue involves uncontrolled resource consumption in parse_duration. Remediation is available in the latest vendor maintenance releases.

CVE-2021-29932 at a Glance

CVE Identifier CVE-2021-29932
GHSA Identifier GHSA-qpgv-g792-wh6x
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Parse duration
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-2021-29932

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

parse_duration fixed: Latest secure release 
Upgrade parse_duration to Latest secure release
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 parse_duration

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-29932, inspect your project dependencies for Parse duration:

inspect dependencies for parse_duration

Analyze the terminal output to locate any version of Parse duration in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Parse duration, 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

An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.

CVE-2021-29932 Affected Parse duration Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
parse_duration
 crates.io
≤ 2.1.1

References

NVD — CVE-2021-29932 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29932
Parse duration Source Repository REPOSITORY
https://github.com/zeta12ti/parse_duration/issues/21
Parse duration Source Repository REPOSITORY
https://github.com/zeta12ti/parse_duration
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0041.html

Frequently Asked Questions

What is CVE-2021-29932?
CVE-2021-29932 is a security vulnerability in Parse duration involving Uncontrolled Resource Consumption in parse_duration under CWE-400: Uncontrolled Resource Consumption.
Which Parse duration versions are affected?
Affected versions include releases prior to current release patches across affected packages: parse_duration.
What version fixes CVE-2021-29932?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is parse_duration affected?
Yes, parse_duration is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-29932?
CVE-2021-29932 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-2021-29932?
CVE-2021-29932 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check crates.io dependencies for CVE-2021-29932?
Run the dependency tree command: 'inspect dependencies for parse_duration'. 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-qpgv-g792-wh6x",
  "modified" : "2021-08-19T17:21:25Z",
  "published" : "2021-08-25T20:54:04Z",
  "aliases" : [ "CVE-2021-29932" ],
  "summary" : "Uncontrolled Resource Consumption in parse_duration",
  "details" : "An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.",
  "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" : "parse_duration"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-29932"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/zeta12ti/parse_duration/issues/21"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/zeta12ti/parse_duration"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0041.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T17:21:25Z",
    "nvd_published_at" : "2021-04-01T05:15:00Z"
  }
}