CVE-2016-5091: Typo3/cms extbase Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-jxg5-35fj-ccwf
Share
CVSS 8.1
Published
Advisory Summary

CVE-2016-5091 is a HIGH (CVSS 8.1) remote code execution vulnerability (General Security Weakness) affecting Typo3/cms extbase libraries in the Packagist ecosystem. The issue involves extbase for typo3 allows rce. Remediation is available by upgrading affected packages to version 6.2.24, 7.6.8.

CVE-2016-5091 at a Glance

CVE Identifier CVE-2016-5091
GHSA Identifier GHSA-jxg5-35fj-ccwf
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification General Security Weakness
Affected Product Typo3/cms extbase
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2016-5091

To remediate this vulnerability, upgrade all affected Typo3/cms extbase dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

typo3/cms-extbase fixed: 6.2.24 
Upgrade typo3/cms-extbase to 6.2.24
typo3/cms-extbase fixed: 7.6.8 
Upgrade typo3/cms-extbase to 7.6.8
typo3/cms-extbase fixed: Latest secure release 
Upgrade typo3/cms-extbase 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 typo3/cms-extbase

How to Check if You Are Affected

To determine whether your application is affected by CVE-2016-5091, inspect your project dependencies for Typo3/cms extbase:

inspect dependencies for typo3/cms-extbase

Analyze the terminal output to locate any version of Typo3/cms extbase in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.2.24), 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 Typo3/cms extbase, 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

Extbase in TYPO3 4.3.0 before 6.2.24, 7.x before 7.6.8, and 8.1.1 allows remote attackers to obtain sensitive information or possibly execute arbitrary code via a crafted Extbase action.

CVE-2016-5091 Affected Typo3/cms extbase Versions

3 component(s)
Fixed Versions:
6.2.247.6.8
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms-extbase
 Packagist
< 6.2.24
6.2.24
typo3/cms-extbase
 Packagist
≥ 7.0
< 7.6.8
7.6.8
typo3/cms-extbase
 Packagist
8.1.1
All 1 versions
8.1.1
None specified

References

NVD — CVE-2016-5091 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-5091
Typo3/cms extbase Security Information SECURITY
https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2016-013
Typo3/cms extbase Security Information SECURITY
http://www.openwall.com/lists/oss-security/2016/05/25/4
Typo3/cms extbase Security Information SECURITY
http://www.openwall.com/lists/oss-security/2016/05/26/2

Frequently Asked Questions

What is CVE-2016-5091?
CVE-2016-5091 is a security vulnerability in Typo3/cms extbase involving Extbase for TYPO3 allows RCE under General Security Weakness.
Which Typo3/cms extbase versions are affected?
Affected versions include releases prior to 6.2.24, 7.6.8 across affected packages: typo3/cms-extbase.
What version fixes CVE-2016-5091?
Upgrading to 6.2.24, 7.6.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms-extbase affected?
Yes, typo3/cms-extbase is affected in releases prior to 6.2.24, 7.6.8, Latest secure release. Upgrade your dependency to 6.2.24, 7.6.8, Latest secure release or later.
What is the CVSS score of CVE-2016-5091?
CVE-2016-5091 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2016-5091?
CVE-2016-5091 is classified under General Security Weakness.
How can I check Packagist dependencies for CVE-2016-5091?
Run the dependency tree command: 'inspect dependencies for typo3/cms-extbase'. 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-jxg5-35fj-ccwf",
  "modified" : "2023-07-31T21:01:24Z",
  "published" : "2022-05-17T03:02:43Z",
  "aliases" : [ "CVE-2016-5091" ],
  "summary" : "Extbase for TYPO3 allows RCE",
  "details" : "Extbase in TYPO3 4.3.0 before 6.2.24, 7.x before 7.6.8, and 8.1.1 allows remote attackers to obtain sensitive information or possibly execute arbitrary code via a crafted Extbase action.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extbase"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.2.24"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extbase"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0"
      }, {
        "fixed" : "7.6.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-extbase"
    },
    "versions" : [ "8.1.1" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-5091"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2016-013"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2016/05/25/4"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2016/05/26/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-31T21:01:24Z",
    "nvd_published_at" : "2017-01-23T21:59:00Z"
  }
}