GHSA-xxmq-4vph-956w: Comrak Comrak Vulnerable To Production Of Vulnerability

MODERATE
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CVSS 5.3
Published
Advisory Summary

GHSA-xxmq-4vph-956w is a MODERATE (CVSS 5.3) comrak vulnerable to production of vulnerability (General Security Weakness) affecting Comrak libraries in the crates.io ecosystem. The issue involves comrak vulnerable to production of excessive output when parsing markdown (ghsl-2023-048). Remediation is available by upgrading affected packages to version 0.17.0.

GHSA-xxmq-4vph-956w at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-xxmq-4vph-956w
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification General Security Weakness
Affected Product Comrak
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix GHSA-xxmq-4vph-956w

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

comrak fixed: 0.17.0 
Upgrade comrak to 0.17.0
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 comrak

How to Check if You Are Affected

To determine whether your application is affected by GHSA-xxmq-4vph-956w, inspect your project dependencies for Comrak:

inspect dependencies for comrak

Analyze the terminal output to locate any version of Comrak in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.17.0), 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 General Security Weakness. In Comrak, 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

### Impact comrak is vulnerable to the upstream cmark issue, ["Issue revealed by fuzzer"](https://github.com/commonmark/cmark/issues/354). A large number of references in a markdown document can trigger an overly large response. ### Patches 0.17.0 contains https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a, which limits reference output to a 100Kb maximum. ### Workarounds n/a ### References * https://github.com/commonmark/cmark/issues/354

GHSA-xxmq-4vph-956w Affected Comrak Versions

1 component(s)
Fixed Versions:
0.17.0
Product / Package Ecosystem Affected Versions Fixed Version
comrak
 crates.io
< 0.17.0
0.17.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/kivikakk/comrak/security/advisories/GHSA-xxmq-4vph-956w
Comrak Source Repository REPOSITORY
https://github.com/commonmark/cmark/issues/354
Security Fix Commit FIX COMMIT
https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a
Comrak Source Repository REPOSITORY
https://github.com/kivikakk/comrak
Comrak Release RELEASE
https://github.com/kivikakk/comrak/releases/tag/0.17.0

Frequently Asked Questions

What is GHSA-xxmq-4vph-956w?
GHSA-xxmq-4vph-956w is a security vulnerability in Comrak involving Comrak vulnerable to production of excessive output when parsing Markdown (GHSL-2023-048) under General Security Weakness.
Which Comrak versions are affected?
Affected versions include releases prior to 0.17.0 across affected packages: comrak.
What version fixes GHSA-xxmq-4vph-956w?
Upgrading to 0.17.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is comrak affected?
Yes, comrak is affected in releases prior to 0.17.0. Upgrade your dependency to 0.17.0 or later.
What is the CVSS score of GHSA-xxmq-4vph-956w?
GHSA-xxmq-4vph-956w has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with GHSA-xxmq-4vph-956w?
GHSA-xxmq-4vph-956w is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-xxmq-4vph-956w?
Run the dependency tree command: 'inspect dependencies for comrak'. 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-xxmq-4vph-956w",
  "modified" : "2023-03-28T14:44:04Z",
  "published" : "2023-03-28T14:44:04Z",
  "aliases" : [ ],
  "summary" : "Comrak vulnerable to production of excessive output when parsing Markdown (GHSL-2023-048)",
  "details" : "### Impact\n\ncomrak is vulnerable to the upstream cmark issue, [\"Issue revealed by fuzzer\"](https://github.com/commonmark/cmark/issues/354). A large number of references in a markdown document can trigger an overly large response.\n\n### Patches\n\n0.17.0 contains https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a, which limits reference output to a 100Kb maximum.\n\n### Workarounds\n\nn/a\n\n### References\n\n* https://github.com/commonmark/cmark/issues/354",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "comrak"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.17.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/kivikakk/comrak/security/advisories/GHSA-xxmq-4vph-956w"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/commonmark/cmark/issues/354"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/kivikakk/comrak"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kivikakk/comrak/releases/tag/0.17.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-03-28T14:44:04Z",
    "nvd_published_at" : null
  }
}