CVE-2012-3527: Typo3/cms TYPO3 Allows Remote Authenticated Backend Vulnerability

MODERATE
Advisory Identifier: GHSA-m4hw-r893-xh4g
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CWE-502
Published
Advisory Summary

CVE-2012-3527 is a MODERATE typo3 allows remote authenticated backend vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Typo3/cms libraries in the Packagist ecosystem. The issue involves typo3 allows remote authenticated backend users to unserialize arbitrary objects. Remediation is available by upgrading affected packages to version 4.5.19, 4.6.12, 4.7.4.

CVE-2012-3527 at a Glance

CVE Identifier CVE-2012-3527
GHSA Identifier GHSA-m4hw-r893-xh4g
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Typo3/cms
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2012-3527

To remediate this vulnerability, upgrade all affected Typo3/cms 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 fixed: 4.5.19 
Upgrade typo3/cms to 4.5.19
typo3/cms fixed: 4.6.12 
Upgrade typo3/cms to 4.6.12
typo3/cms fixed: 4.7.4 
Upgrade typo3/cms to 4.7.4
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

How to Check if You Are Affected

To determine whether your application is affected by CVE-2012-3527, inspect your project dependencies for Typo3/cms:

inspect dependencies for typo3/cms

Analyze the terminal output to locate any version of Typo3/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.5.19), 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-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Typo3/cms, 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

view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a "missing signature (HMAC)."

CVE-2012-3527 Affected Typo3/cms Versions

3 component(s)
Fixed Versions:
4.5.194.6.124.7.4
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms
 Packagist
≥ 4.5.0
< 4.5.19
4.5.19
typo3/cms
 Packagist
≥ 4.6.0
< 4.6.12
4.6.12
typo3/cms
 Packagist
≥ 4.7.0
< 4.7.4
4.7.4

References

NVD — CVE-2012-3527 NVD
https://nvd.nist.gov/vuln/detail/CVE-2012-3527
exchange.xforce.ibmcloud.com/vulnerabilities/777... WEB
https://exchange.xforce.ibmcloud.com/vulnerabilities/77791
Typo3/cms Source Repository REPOSITORY
https://github.com/TYPO3/typo3
Typo3/cms Security Information SECURITY
http://www.debian.org/security/2012/dsa-2537
Typo3/cms Security Information SECURITY
https://web.archive.org/web/20120817233148/http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-004
Typo3/cms Security Information SECURITY
http://www.openwall.com/lists/oss-security/2012/08/22/8

Frequently Asked Questions

What is CVE-2012-3527?
CVE-2012-3527 is a security vulnerability in Typo3/cms involving TYPO3 allows remote authenticated backend users to unserialize arbitrary objects under CWE-502: Deserialization of Untrusted Data.
Which Typo3/cms versions are affected?
Affected versions include releases prior to 4.5.19, 4.6.12, 4.7.4 across affected packages: typo3/cms.
What version fixes CVE-2012-3527?
Upgrading to 4.5.19, 4.6.12, 4.7.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms affected?
Yes, typo3/cms is affected in releases prior to 4.5.19, 4.6.12, 4.7.4. Upgrade your dependency to 4.5.19, 4.6.12, 4.7.4 or later.
What CWE is associated with CVE-2012-3527?
CVE-2012-3527 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Packagist dependencies for CVE-2012-3527?
Run the dependency tree command: 'inspect dependencies for typo3/cms'. 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-m4hw-r893-xh4g",
  "modified" : "2025-04-12T03:01:43Z",
  "published" : "2022-05-17T01:43:58Z",
  "aliases" : [ "CVE-2012-3527" ],
  "summary" : "TYPO3 allows remote authenticated backend users to unserialize arbitrary objects",
  "details" : "view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a \"missing signature (HMAC).\"",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.5.0"
      }, {
        "fixed" : "4.5.19"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.6.0"
      }, {
        "fixed" : "4.6.12"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.7.0"
      }, {
        "fixed" : "4.7.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2012-3527"
  }, {
    "type" : "WEB",
    "url" : "https://exchange.xforce.ibmcloud.com/vulnerabilities/77791"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3/typo3"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20120817233148/http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-004"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2012/dsa-2537"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2012/08/22/8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-12T03:01:43Z",
    "nvd_published_at" : "2012-09-05T23:55:00Z"
  }
}