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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTN4OTQtZnY1aC01cTJj

Exposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMS

Meta

  • CVSS: 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)
  • CWE-20, CWE-200

Problem

In case an attacker manages to generate a valid cryptographic message authentication code (HMAC-SHA1) - either by using a different existing vulnerability or in case the internal encryptionKey was exposed - it is possible to retrieve arbitrary files of a TYPO3 installation. This includes the possibility to fetch typo3conf/LocalConfiguration.php which again contains the encryptionKey as well as credentials of the database management system being used.

In case a database server is directly accessible either via internet or in a shared hosting network, this allows to completely retrieve, manipulate or delete database contents. This includes creating an administration user account - which can be used to trigger remote code execution by injecting custom extensions.

Solution

Update to TYPO3 versions 9.5.20 or 10.4.6 that fix the problem described.

Credits

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

References

Permalink: https://github.com/advisories/GHSA-3x94-fv5h-5q2c
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTN4OTQtZnY1aC01cTJj
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 3 years ago
Updated: 2 months ago


CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-3x94-fv5h-5q2c, CVE-2020-15099
References: Repository: https://github.com/TYPO3/TYPO3.CMS
Blast Radius: 29.0

Affected Packages

packagist:typo3/cms
Dependent packages: 376
Dependent repositories: 407
Downloads: 1,858,203 total
Affected Version Ranges: >= 9.0.0, < 9.5.20, >= 10.0.0, < 10.4.6
Fixed in: 9.5.20, 10.4.6
All affected versions: 9.0.0, 9.1.0, 9.2.0, 9.2.1, 9.3.0, 9.3.1, 9.3.2, 9.3.3, 9.4.0, 9.5.0, 9.5.1, 9.5.2, 9.5.3, 9.5.4, 9.5.5, 9.5.6, 9.5.7, 9.5.8, 9.5.9, 9.5.10, 9.5.11, 9.5.12, 9.5.13, 9.5.14, 9.5.15, 9.5.16, 9.5.17, 9.5.18, 9.5.19, 10.0.0, 10.1.0, 10.2.0, 10.2.1, 10.2.2, 10.3.0, 10.4.0, 10.4.1, 10.4.2, 10.4.3, 10.4.4, 10.4.5
All unaffected versions: 6.2.0, 6.2.1, 6.2.2, 6.2.3, 6.2.4, 6.2.5, 6.2.6, 6.2.7, 6.2.8, 6.2.9, 6.2.10, 6.2.11, 6.2.12, 6.2.13, 6.2.14, 6.2.15, 6.2.16, 6.2.17, 6.2.18, 6.2.19, 6.2.20, 6.2.21, 6.2.22, 6.2.23, 6.2.24, 6.2.25, 6.2.26, 6.2.27, 6.2.28, 6.2.29, 6.2.30, 6.2.31, 7.0.0, 7.0.1, 7.0.2, 7.1.0, 7.2.0, 7.3.0, 7.3.1, 7.4.0, 7.5.0, 7.6.0, 7.6.1, 7.6.2, 7.6.3, 7.6.4, 7.6.5, 7.6.6, 7.6.7, 7.6.8, 7.6.9, 7.6.10, 7.6.11, 7.6.12, 7.6.13, 7.6.14, 7.6.15, 7.6.16, 7.6.17, 7.6.18, 7.6.19, 7.6.20, 7.6.21, 7.6.22, 7.6.23, 7.6.24, 7.6.25, 7.6.26, 7.6.27, 7.6.28, 7.6.29, 7.6.30, 7.6.31, 7.6.32, 8.0.0, 8.0.1, 8.1.0, 8.1.1, 8.1.2, 8.2.0, 8.2.1, 8.3.0, 8.3.1, 8.4.0, 8.4.1, 8.5.0, 8.5.1, 8.6.0, 8.6.1, 8.7.0, 8.7.1, 8.7.2, 8.7.3, 8.7.4, 8.7.5, 8.7.6, 8.7.7, 8.7.8, 8.7.9, 8.7.10, 8.7.11, 8.7.12, 8.7.13, 8.7.14, 8.7.15, 8.7.16, 8.7.17, 8.7.18, 8.7.19, 8.7.20, 8.7.21, 8.7.22, 8.7.23, 8.7.24, 8.7.25, 8.7.26, 8.7.27, 8.7.28, 8.7.29, 8.7.30, 8.7.31, 8.7.32, 9.5.20, 9.5.21, 9.5.22, 9.5.23, 9.5.24, 9.5.25, 9.5.26, 9.5.27, 9.5.28, 9.5.29, 9.5.30, 9.5.31, 10.4.6, 10.4.7, 10.4.8, 10.4.9, 10.4.10, 10.4.11, 10.4.12, 10.4.13, 10.4.14, 10.4.15, 10.4.16, 10.4.17, 10.4.18, 10.4.19, 10.4.20, 10.4.21, 10.4.22, 10.4.23, 10.4.24, 10.4.25, 10.4.26, 10.4.27, 10.4.28, 10.4.29, 10.4.30, 10.4.31, 10.4.32, 10.4.33, 10.4.34, 10.4.35, 10.4.36, 10.4.37, 11.0.0, 11.1.0, 11.1.1, 11.2.0, 11.3.0, 11.3.1, 11.3.2, 11.3.3, 11.4.0, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.5.11, 11.5.12, 11.5.13, 11.5.14, 11.5.15, 11.5.16, 11.5.17, 11.5.18, 11.5.19, 11.5.20, 11.5.21, 11.5.22, 11.5.23, 11.5.24, 11.5.25, 11.5.26, 11.5.27, 11.5.28, 11.5.29, 11.5.30, 11.5.31, 11.5.32, 11.5.33, 11.5.34, 11.5.35, 11.5.36, 12.0.0, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.2.0, 12.3.0, 12.4.0, 12.4.1, 12.4.2, 12.4.3, 12.4.4, 12.4.5, 12.4.6, 12.4.7, 12.4.8, 12.4.9, 12.4.10, 12.4.11, 12.4.12, 12.4.13, 12.4.14, 13.0.0, 13.0.1
packagist:typo3/cms-core
Dependent packages: 2,922
Dependent repositories: 3,856
Downloads: 6,951,014 total
Affected Version Ranges: >= 10.0.0, < 10.4.6, >= 9.0.0, < 9.5.20
Fixed in: 10.4.6, 9.5.20
All affected versions: 9.0.0, 9.1.0, 9.2.0, 9.2.1, 9.3.0, 9.3.1, 9.3.2, 9.3.3, 9.4.0, 9.5.0, 9.5.1, 9.5.2, 9.5.3, 9.5.4, 9.5.5, 9.5.6, 9.5.7, 9.5.8, 9.5.9, 9.5.10, 9.5.11, 9.5.12, 9.5.13, 9.5.14, 9.5.15, 9.5.16, 9.5.17, 9.5.18, 9.5.19, 10.0.0, 10.1.0, 10.2.0, 10.2.1, 10.2.2, 10.3.0, 10.4.0, 10.4.1, 10.4.2, 10.4.3, 10.4.4, 10.4.5
All unaffected versions: 8.7.7, 8.7.8, 8.7.9, 8.7.10, 8.7.11, 8.7.12, 8.7.13, 8.7.14, 8.7.15, 8.7.16, 8.7.17, 8.7.18, 8.7.19, 8.7.20, 8.7.21, 8.7.22, 8.7.23, 8.7.24, 8.7.25, 8.7.26, 8.7.27, 8.7.28, 8.7.29, 8.7.30, 8.7.31, 8.7.32, 9.5.20, 9.5.21, 9.5.22, 9.5.23, 9.5.24, 9.5.25, 9.5.26, 9.5.27, 9.5.28, 9.5.29, 9.5.30, 9.5.31, 10.4.6, 10.4.7, 10.4.8, 10.4.9, 10.4.10, 10.4.11, 10.4.12, 10.4.13, 10.4.14, 10.4.15, 10.4.16, 10.4.17, 10.4.18, 10.4.19, 10.4.20, 10.4.21, 10.4.22, 10.4.23, 10.4.24, 10.4.25, 10.4.26, 10.4.27, 10.4.28, 10.4.29, 10.4.30, 10.4.31, 10.4.32, 10.4.33, 10.4.34, 10.4.35, 10.4.36, 10.4.37, 11.0.0, 11.1.0, 11.1.1, 11.2.0, 11.3.0, 11.3.1, 11.3.2, 11.3.3, 11.4.0, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.5.11, 11.5.12, 11.5.13, 11.5.14, 11.5.15, 11.5.16, 11.5.17, 11.5.18, 11.5.19, 11.5.20, 11.5.21, 11.5.22, 11.5.23, 11.5.24, 11.5.25, 11.5.26, 11.5.27, 11.5.28, 11.5.29, 11.5.30, 11.5.31, 11.5.32, 11.5.33, 11.5.34, 11.5.35, 11.5.36, 12.0.0, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.2.0, 12.3.0, 12.4.0, 12.4.1, 12.4.2, 12.4.3, 12.4.4, 12.4.5, 12.4.6, 12.4.7, 12.4.8, 12.4.9, 12.4.10, 12.4.11, 12.4.12, 12.4.13, 12.4.14, 13.0.0, 13.0.1