GHSA-2fhr-8r8r-qp56: Zendframework/zendframework ZendFramework Information Disclosure And Insufficient Vulnerability

MODERATE
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CVSS 5.3
CWE-331 CWE-200
Published
Advisory Summary

GHSA-2fhr-8r8r-qp56 is a MODERATE (CVSS 5.3) zendframework information disclosure and insufficient vulnerability (CWE-331: Insufficient Entropy) affecting Zendframework/zendframework libraries in the Packagist ecosystem. The issue involves zendframework information disclosure and insufficient entropy vulnerability. Remediation is available by upgrading affected packages to version 2.4.9.

GHSA-2fhr-8r8r-qp56 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-2fhr-8r8r-qp56
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-331: Insufficient Entropy
Affected Product Zendframework/zendframework
Package Ecosystem Packagist
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:L/I:N/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 None (I:N)
Availability None (A:N)

How to Fix GHSA-2fhr-8r8r-qp56

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

zendframework/zendframework fixed: 2.4.9 
Upgrade zendframework/zendframework to 2.4.9
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 zendframework/zendframework

How to Check if You Are Affected

To determine whether your application is affected by GHSA-2fhr-8r8r-qp56, inspect your project dependencies for Zendframework/zendframework:

inspect dependencies for zendframework/zendframework

Analyze the terminal output to locate any version of Zendframework/zendframework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.4.9), 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-331: Insufficient Entropy, where the product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others. In Zendframework/zendframework, 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

In Zend Framework, `Zend_Captcha_Word` (v1) and `Zend\Captcha\Word` (v2) generate a "word" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's `internal array_rand()` function. This function does not generate sufficient entropy due to its usage of `rand()` instead of more cryptographically secure methods such as `openssl_pseudo_random_bytes()`. This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.

GHSA-2fhr-8r8r-qp56 Affected Zendframework/zendframework Versions

1 component(s)
Fixed Versions:
2.4.9
Product / Package Ecosystem Affected Versions Fixed Version
zendframework/zendframework
 Packagist
≥ 2.0.0
< 2.4.9
2.4.9

References

Security Fix Commit FIX COMMIT
https://github.com/zendframework/zendframework/commit/ced8ff93ef892a64885c03f5dfab3f788a219709
Zendframework/zendframework Security Information SECURITY
https://framework.zend.com/security/advisory/ZF2015-09
Zendframework/zendframework Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework/ZF2015-09.yaml
Zendframework/zendframework Source Repository REPOSITORY
https://github.com/zendframework/zendframework

Frequently Asked Questions

What is GHSA-2fhr-8r8r-qp56?
GHSA-2fhr-8r8r-qp56 is a security vulnerability in Zendframework/zendframework involving ZendFramework Information Disclosure and Insufficient Entropy vulnerability under CWE-331: Insufficient Entropy.
Which Zendframework/zendframework versions are affected?
Affected versions include releases prior to 2.4.9 across affected packages: zendframework/zendframework.
What version fixes GHSA-2fhr-8r8r-qp56?
Upgrading to 2.4.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is zendframework/zendframework affected?
Yes, zendframework/zendframework is affected in releases prior to 2.4.9. Upgrade your dependency to 2.4.9 or later.
What is the CVSS score of GHSA-2fhr-8r8r-qp56?
GHSA-2fhr-8r8r-qp56 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:L/I:N/A:N.
What CWE is associated with GHSA-2fhr-8r8r-qp56?
GHSA-2fhr-8r8r-qp56 is classified under CWE-331: Insufficient Entropy (The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.).
How can I check Packagist dependencies for GHSA-2fhr-8r8r-qp56?
Run the dependency tree command: 'inspect dependencies for zendframework/zendframework'. 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-2fhr-8r8r-qp56",
  "modified" : "2024-06-07T20:37:45Z",
  "published" : "2024-06-07T20:37:45Z",
  "aliases" : [ ],
  "summary" : "ZendFramework Information Disclosure and Insufficient Entropy vulnerability",
  "details" : "In Zend Framework, `Zend_Captcha_Word` (v1) and `Zend\\Captcha\\Word` (v2) generate a \"word\" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's `internal array_rand()` function. This function does not generate sufficient entropy due to its usage of `rand()` instead of more cryptographically secure methods such as `openssl_pseudo_random_bytes()`. This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "zendframework/zendframework"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.4.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/zendframework/zendframework/commit/ced8ff93ef892a64885c03f5dfab3f788a219709"
  }, {
    "type" : "WEB",
    "url" : "https://framework.zend.com/security/advisory/ZF2015-09"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework/ZF2015-09.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/zendframework/zendframework"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-331" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-07T20:37:45Z",
    "nvd_published_at" : null
  }
}