GHSA-4h44-w6fm-548g

Suggest an improvement
Source
https://github.com/advisories/GHSA-4h44-w6fm-548g
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/07/GHSA-4h44-w6fm-548g/GHSA-4h44-w6fm-548g.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-4h44-w6fm-548g
Aliases
Related
Published
2020-07-29T16:15:12Z
Modified
2026-01-30T01:38:30.700438Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Potential Remote Code Execution in TYPO3 with mediace extension
Details

Meta

  • CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C (9.1)
  • CWE-325, CWE-20, CWE-200, CWE-502

Problem

It has been discovered that an internal verification mechanism can be used to generate arbitrary checksums. This allows to inject arbitrary data having a valid cryptographic message authentication code (HMAC-SHA1) and can lead to various attack chains as described below.

  • TYPO3-CORE-SA-2020-007, CVE-2020-15099: Potential Privilege Escalation
    • the database server used for a TYPO3 installation must be accessible for an attacker (either via internet or shared hosting network)
    • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C (7.5, high)
  • TYPO3-CORE-SA-2016-013, CVE-2016-5091: Insecure Deserialization & Remote Code Execution
    • an attacker must have access to at least one Extbase plugin or module action in a TYPO3 installation
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C (9.1, critical)

The overall severity of this vulnerability is critical (9.1) based on mentioned attack chains and the fact it does not require any privileges.

Solution

In case the extension is not used and required at all, it is suggested to uninstall and remove it from the system completely. Otherwise, an updated version 7.6.5 is available from the TYPO3 extension manager, Packagist and the TYPO3 extension repository:

  • https://extensions.typo3.org/extension/download/mediace/7.6.5/zip/
  • https://packagist.org/packages/friendsoftypo3/mediace#7.6.5

As a precautionary measure it is advised to change encryptionKey and database credentials in typo3conf/LocalConfiguration.php.

Credits

Thanks to TYPO3 security team member Oliver Hader who reported and fixed the issue.

References

Database specific 
{
    "severity": "CRITICAL",
    "nvd_published_at": "2020-07-29T17:15:00Z",
    "github_reviewed_at": "2020-07-29T16:09:56Z",
    "cwe_ids": [
        "CWE-20",
        "CWE-200",
        "CWE-325",
        "CWE-502"
    ],
    "github_reviewed": true
}
References

Affected packages

Packagist / friendsoftypo3/mediace

Package

Name
friendsoftypo3/mediace
Purl
pkg:composer/friendsoftypo3/mediace

Affected ranges

Type
ECOSYSTEM
Events
Introduced
7.6.2
Fixed
7.6.5

Affected versions

7.*
7.6.3
7.6.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/07/GHSA-4h44-w6fm-548g/GHSA-4h44-w6fm-548g.json"