GHSA-2jx7-xg83-j2m7: Zendframework/zendframework1 Denial of Service Vulnerability

HIGH
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CVSS 7.5
CWE-776
Published
Advisory Summary

GHSA-2jx7-xg83-j2m7 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')) affecting Zendframework/zendframework1 libraries in the Packagist ecosystem. The issue involves zendframework denial of service vector via xee injection. Remediation is available by upgrading affected packages to version 1.11.13.

GHSA-2jx7-xg83-j2m7 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-2jx7-xg83-j2m7
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Affected Product Zendframework/zendframework1
Package Ecosystem Packagist
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 GHSA-2jx7-xg83-j2m7

To remediate this vulnerability, upgrade all affected Zendframework/zendframework1 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/zendframework1 fixed: 1.11.13 
Upgrade zendframework/zendframework1 to 1.11.13
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/zendframework1

How to Check if You Are Affected

To determine whether your application is affected by GHSA-2jx7-xg83-j2m7, inspect your project dependencies for Zendframework/zendframework1:

inspect dependencies for zendframework/zendframework1

Analyze the terminal output to locate any version of Zendframework/zendframework1 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.11.13), 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-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion'), where the product uses xml documents and allows their structure to be defined with a document type definition (dtd), but it does not properly control the number of recursive definitions of entities. In Zendframework/zendframework1, 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

`Zend_Dom`, `Zend_Feed`, `Zend_Soap`, and `Zend_XmlRpc` are vulnerable to XML Entity Expansion (XEE) vectors, leading to Denial of Service vectors. XEE attacks occur when the XML DOCTYPE declaration includes XML entity definitions that contain either recursive or circular references; this leads to CPU and memory consumption, making Denial of Service exploits trivial to implement.

GHSA-2jx7-xg83-j2m7 Affected Zendframework/zendframework1 Versions

1 component(s)
Fixed Versions:
1.11.13
Product / Package Ecosystem Affected Versions Fixed Version
zendframework/zendframework1
 Packagist
≥ 1.0.0
< 1.11.13
1.11.13

References

Zendframework/zendframework1 Security Information SECURITY
https://framework.zend.com/security/advisory/ZF2012-02
Zendframework/zendframework1 Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework1/ZF2012-02.yaml
Zendframework/zendframework1 Source Repository REPOSITORY
https://github.com/zendframework/zf1

Frequently Asked Questions

What is GHSA-2jx7-xg83-j2m7?
GHSA-2jx7-xg83-j2m7 is a security vulnerability in Zendframework/zendframework1 involving Zendframework Denial of Service vector via XEE injection under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion').
Which Zendframework/zendframework1 versions are affected?
Affected versions include releases prior to 1.11.13 across affected packages: zendframework/zendframework1.
What version fixes GHSA-2jx7-xg83-j2m7?
Upgrading to 1.11.13 (or the latest patched release for your respective branch) resolves the vulnerability.
Is zendframework/zendframework1 affected?
Yes, zendframework/zendframework1 is affected in releases prior to 1.11.13. Upgrade your dependency to 1.11.13 or later.
What is the CVSS score of GHSA-2jx7-xg83-j2m7?
GHSA-2jx7-xg83-j2m7 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 GHSA-2jx7-xg83-j2m7?
GHSA-2jx7-xg83-j2m7 is classified under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') (The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.).
How can I check Packagist dependencies for GHSA-2jx7-xg83-j2m7?
Run the dependency tree command: 'inspect dependencies for zendframework/zendframework1'. 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-2jx7-xg83-j2m7",
  "modified" : "2024-06-07T21:39:23Z",
  "published" : "2024-06-07T21:39:23Z",
  "aliases" : [ ],
  "summary" : "Zendframework Denial of Service vector via XEE injection",
  "details" : "`Zend_Dom`, `Zend_Feed`, `Zend_Soap`, and `Zend_XmlRpc` are vulnerable to XML Entity Expansion (XEE) vectors, leading to Denial of Service vectors. XEE attacks occur when the XML DOCTYPE declaration includes XML entity definitions that contain either recursive or circular references; this leads to CPU and memory consumption, making Denial of Service exploits trivial to implement.\n\n",
  "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" : "Packagist",
      "name" : "zendframework/zendframework1"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.0"
      }, {
        "fixed" : "1.11.13"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://framework.zend.com/security/advisory/ZF2012-02"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework1/ZF2012-02.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/zendframework/zf1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-776" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-07T21:39:23Z",
    "nvd_published_at" : null
  }
}