CVE-2024-21495: Github.com/greenpau/caddy security Use Of Insufficiently Random Values Vulnerability

MODERATE
Advisory Identifier: GHSA-c7vf-m394-m4x4
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CVSS 6.5
CWE-330
Published
Advisory Summary

CVE-2024-21495 is a MODERATE (CVSS 6.5) use of insufficiently random values vulnerability (CWE-330: Use of Insufficiently Random Values) affecting Github.com/greenpau/caddy security libraries in the Go ecosystem. The issue involves use of insufficiently random values in github.com/greenpau/caddy-security. Remediation is available in the latest vendor maintenance releases.

CVE-2024-21495 at a Glance

CVE Identifier CVE-2024-21495
GHSA Identifier GHSA-c7vf-m394-m4x4
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-330: Use of Insufficiently Random Values
Affected Product Github.com/greenpau/caddy security
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:L/I:L/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 Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2024-21495

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

github.com/greenpau/caddy-security fixed: Latest secure release 
Upgrade github.com/greenpau/caddy-security 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 github.com/greenpau/caddy-security

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-21495, inspect your project dependencies for Github.com/greenpau/caddy security:

inspect dependencies for github.com/greenpau/caddy-security

Analyze the terminal output to locate any version of Github.com/greenpau/caddy security 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-330: Use of Insufficiently Random Values, where the product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. In Github.com/greenpau/caddy security, 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

Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authentication (MFA) secrets and creating API keys in the database package.

CVE-2024-21495 Affected Github.com/greenpau/caddy security Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github.com/greenpau/caddy-security
golang/github.com/greenpau/caddy-security
Go
≤ 1.0.42

References

NVD — CVE-2024-21495 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-21495
Github.com/greenpau/caddy security Source Repository REPOSITORY
https://github.com/greenpau/caddy-security/issues/265
Security Fix Commit FIX COMMIT
https://github.com/greenpau/go-authcrunch/commit/ecd3725baf2683eb1519bb3c81ae41085fbf7dc2
Github.com/greenpau/caddy security Security Information SECURITY
https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy
Github.com/greenpau/caddy security Security Information SECURITY
https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6248275
Github.com/greenpau/caddy security Security Information SECURITY
github.com/greenpau/caddy-security

Frequently Asked Questions

What is CVE-2024-21495?
CVE-2024-21495 is a security vulnerability in Github.com/greenpau/caddy security involving Use of Insufficiently Random Values in github.com/greenpau/caddy-security under CWE-330: Use of Insufficiently Random Values.
Which Github.com/greenpau/caddy security versions are affected?
Affected versions include releases prior to current release patches across affected packages: github.com/greenpau/caddy-security.
What version fixes CVE-2024-21495?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/greenpau/caddy-security affected?
Yes, github.com/greenpau/caddy-security 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-2024-21495?
CVE-2024-21495 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2024-21495?
CVE-2024-21495 is classified under CWE-330: Use of Insufficiently Random Values (The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.).
How can I check Go dependencies for CVE-2024-21495?
Run the dependency tree command: 'inspect dependencies for github.com/greenpau/caddy-security'. 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-c7vf-m394-m4x4",
  "modified" : "2024-02-20T23:45:44Z",
  "published" : "2024-02-17T06:30:34Z",
  "aliases" : [ "CVE-2024-21495" ],
  "summary" : "Use of Insufficiently Random Values in github.com/greenpau/caddy-security",
  "details" : "Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authentication (MFA) secrets and creating API keys in the database package.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/greenpau/caddy-security"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.42"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-21495"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/greenpau/caddy-security/issues/265"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/greenpau/go-authcrunch/commit/ecd3725baf2683eb1519bb3c81ae41085fbf7dc2"
  }, {
    "type" : "WEB",
    "url" : "https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6248275"
  }, {
    "type" : "PACKAGE",
    "url" : "github.com/greenpau/caddy-security"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-330" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-20T23:45:44Z",
    "nvd_published_at" : "2024-02-17T05:15:09Z"
  }
}