GHSA-4H44-W6FM-548G

Vulnerability from github – Published: 2020-07-29 16:15 – Updated: 2024-02-05 10:43
VLAI?
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

Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "friendsoftypo3/mediace"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.6.2"
            },
            {
              "fixed": "7.6.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-15086"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-200",
      "CWE-325",
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-07-29T16:09:56Z",
    "nvd_published_at": "2020-07-29T17:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "\u003e ### Meta\n\u003e * 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)\n\u003e * CWE-325, CWE-20, CWE-200, CWE-502\n\n### Problem\nIt 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.\n\n* [TYPO3-CORE-SA-2020-007](https://typo3.org/security/advisory/typo3-core-sa-2020-007), [CVE-2020-15099](https://nvd.nist.gov/vuln/detail/CVE-2020-15099): Potential Privilege Escalation\n  + the database server used for a TYPO3 installation must be accessible for an attacker (either via internet or shared hosting network)\n  + `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)\n* [TYPO3-CORE-SA-2016-013](https://typo3.org/security/advisory/typo3-core-sa-2016-013), [CVE-2016-5091](https://nvd.nist.gov/vuln/detail/CVE-2016-5091): Insecure Deserialization \u0026 Remote Code Execution\n  + an attacker must have access to at least one Extbase plugin or module action in a TYPO3 installation\n  + `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)\n\nThe overall severity of this vulnerability is critical (9.1) based on mentioned attack chains and the fact it does not require any privileges.\n\n### Solution\nIn 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:\n\n* https://extensions.typo3.org/extension/download/mediace/7.6.5/zip/\n* https://packagist.org/packages/friendsoftypo3/mediace#7.6.5\n\nAs a precautionary measure it is advised to change `encryptionKey` and database credentials in `typo3conf/LocalConfiguration.php`.\n\n### Credits\nThanks to TYPO3 security team member Oliver Hader who reported and fixed the issue.\n\n### References\n* [TYPO3-EXT-SA-2020-014](https://typo3.org/security/advisory/typo3-ext-sa-2020-014)",
  "id": "GHSA-4h44-w6fm-548g",
  "modified": "2024-02-05T10:43:51Z",
  "published": "2020-07-29T16:15:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfTYPO3/mediace/security/advisories/GHSA-4h44-w6fm-548g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15086"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfTYPO3/mediace/pull/31"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfTYPO3/mediace/commit/fa29ffd3e8b275782a8600d2406e1b1e5e16ae75"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/friendsoftypo3/mediace/CVE-2020-15086.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/FriendsOfTYPO3/mediace"
    },
    {
      "type": "WEB",
      "url": "https://typo3.org/security/advisory/typo3-ext-sa-2020-014"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Potential Remote Code Execution in TYPO3 with mediace extension"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.