CVE-2023-33289: Withdrawn Advisory Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-fqhp-rhm6-8rrj
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CVSS 7.5
CWE-1333
Published
Advisory Summary

CVE-2023-33289 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Withdrawn Advisory libraries in the crates.io ecosystem. The issue involves urlnorm vulnerable to regular expression denial of service. Remediation is available in the latest vendor maintenance releases.

CVE-2023-33289 at a Glance

CVE Identifier CVE-2023-33289
GHSA Identifier GHSA-fqhp-rhm6-8rrj
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Withdrawn Advisory
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-2023-33289

To remediate this vulnerability, upgrade all affected Withdrawn Advisory dependencies to a patched release.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

urlnorm fixed: Latest secure release 
Upgrade urlnorm 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 urlnorm

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-33289, inspect your project dependencies for Withdrawn Advisory:

inspect dependencies for urlnorm

Analyze the terminal output to locate any version of Withdrawn Advisory in your dependency tree.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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Withdrawn Advisory, 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

## Withdrawn Advisory This advisory has been withdrawn because the security impact of the slow printing of URLs has been disputed. This link is maintained to preserve external references. ## Original Description The urlnorm crate through 0.1.4 for Rust allows Regular Expression Denial of Service (ReDos) via a crafted URL to lib.rs.

CVE-2023-33289 Affected Withdrawn Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
urlnorm
 crates.io
≤ 0.1.4

References

NVD — CVE-2023-33289 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33289
Withdrawn Advisory Source Repository REPOSITORY
https://gist.github.com/6en6ar/b118888dc739e8979038f24c8ac33611
Withdrawn Advisory Source Repository REPOSITORY
https://github.com/progscrape/urlnorm
lib.rs/crates/urlnorm WEB
https://lib.rs/crates/urlnorm
news.ycombinator.com/item WEB
https://news.ycombinator.com/item?id=40435263

Frequently Asked Questions

What is CVE-2023-33289?
CVE-2023-33289 is a security vulnerability in Withdrawn Advisory involving urlnorm vulnerable to Regular Expression Denial of Service under CWE-1333: Inefficient Regular Expression Complexity.
Which Withdrawn Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: urlnorm.
What version fixes CVE-2023-33289?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is urlnorm affected?
Yes, urlnorm 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-2023-33289?
CVE-2023-33289 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-2023-33289?
CVE-2023-33289 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check crates.io dependencies for CVE-2023-33289?
Run the dependency tree command: 'inspect dependencies for urlnorm'. 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-fqhp-rhm6-8rrj",
  "modified" : "2025-03-11T21:55:14Z",
  "published" : "2023-06-21T21:30:25Z",
  "withdrawn" : "2025-03-11T21:55:14Z",
  "aliases" : [ "CVE-2023-33289" ],
  "summary" : "Withdrawn Advisory: urlnorm vulnerable to Regular Expression Denial of Service",
  "details" : "## Withdrawn Advisory\nThis advisory has been withdrawn because the security impact of the slow printing of URLs has been disputed. This link is maintained to preserve external references.\n\n## Original Description\nThe urlnorm crate through 0.1.4 for Rust allows Regular Expression Denial of Service (ReDos) via a crafted URL to lib.rs.",
  "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" : "urlnorm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-33289"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/6en6ar/b118888dc739e8979038f24c8ac33611"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/progscrape/urlnorm"
  }, {
    "type" : "WEB",
    "url" : "https://lib.rs/crates/urlnorm"
  }, {
    "type" : "WEB",
    "url" : "https://news.ycombinator.com/item?id=40435263"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-21T21:58:09Z",
    "nvd_published_at" : "2023-06-21T20:15:10Z"
  }
}