CVE-2019-11767: Phpbb/phpbb PhpBB Server Side Request Forgery Vulnerability

MODERATE
Advisory Identifier: GHSA-4hx9-p925-qcv7
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CVSS 5.8
CWE-918
Published
Advisory Summary

CVE-2019-11767 is a MODERATE (CVSS 5.8) phpbb server side request forgery vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Phpbb/phpbb libraries in the Packagist ecosystem. The issue involves phpbb server side request forgery (ssrf). Remediation is available by upgrading affected packages to version 3.2.6.

CVE-2019-11767 at a Glance

CVE Identifier CVE-2019-11767
GHSA Identifier GHSA-4hx9-p925-qcv7
Severity MODERATE
CVSS v3.1 Base Score 5.8
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Phpbb/phpbb
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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 Changed (S:C)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2019-11767

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

phpbb/phpbb fixed: 3.2.6 
Upgrade phpbb/phpbb to 3.2.6
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 phpbb/phpbb

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-11767, inspect your project dependencies for Phpbb/phpbb:

inspect dependencies for phpbb/phpbb

Analyze the terminal output to locate any version of Phpbb/phpbb in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.2.6), 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Phpbb/phpbb, 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

Server side request forgery (SSRF) in phpBB before 3.2.6 allows checking for the existence of files and services on the local network of the host through the remote avatar upload function.

CVE-2019-11767 Affected Phpbb/phpbb Versions

1 component(s)
Fixed Versions:
3.2.6
Product / Package Ecosystem Affected Versions Fixed Version
phpbb/phpbb
 Packagist
< 3.2.6
3.2.6

References

NVD — CVE-2019-11767 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11767
Phpbb/phpbb Source Repository REPOSITORY
https://github.com/phpbb/phpbb-app
www.phpbb.com/community/viewtopic... WEB
https://www.phpbb.com/community/viewtopic.php?f=14&t=2509941

Frequently Asked Questions

What is CVE-2019-11767?
CVE-2019-11767 is a security vulnerability in Phpbb/phpbb involving phpBB Server side request forgery (SSRF) under CWE-918: Server-Side Request Forgery (SSRF).
Which Phpbb/phpbb versions are affected?
Affected versions include releases prior to 3.2.6 across affected packages: phpbb/phpbb.
What version fixes CVE-2019-11767?
Upgrading to 3.2.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is phpbb/phpbb affected?
Yes, phpbb/phpbb is affected in releases prior to 3.2.6. Upgrade your dependency to 3.2.6 or later.
What is the CVSS score of CVE-2019-11767?
CVE-2019-11767 has a CVSS v3.1 base score of 5.8 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
What CWE is associated with CVE-2019-11767?
CVE-2019-11767 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check Packagist dependencies for CVE-2019-11767?
Run the dependency tree command: 'inspect dependencies for phpbb/phpbb'. 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-4hx9-p925-qcv7",
  "modified" : "2024-04-24T17:45:12Z",
  "published" : "2022-05-24T16:45:11Z",
  "aliases" : [ "CVE-2019-11767" ],
  "summary" : "phpBB Server side request forgery (SSRF)",
  "details" : "Server side request forgery (SSRF) in phpBB before 3.2.6 allows checking for the existence of files and services on the local network of the host through the remote avatar upload function.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "phpbb/phpbb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.2.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-11767"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/phpbb/phpbb-app"
  }, {
    "type" : "WEB",
    "url" : "https://www.phpbb.com/community/viewtopic.php?f=14&t=2509941"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T17:45:12Z",
    "nvd_published_at" : "2019-05-05T06:29:00Z"
  }
}