HIGH8.8
GHSA-2wj9-434x-9hvp
Insecure Deserialization in Backend User Settings in TYPO3 CMS
Quick fix
GHSA-2wj9-434x-9hvp — typo3/cms-core: upgrade to the fixed version with the command below.
composer require typo3/cms-core:^9.5.17Details
It has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of 3rd party components this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability.
Update to TYPO3 versions 9.5.17 or 10.4.2 that fix the problem described.
### References * https://typo3.org/security/advisory/typo3-core-sa-2020-005
Are you affected?
Enter the version of the package you're using.
Affected packages
Packagist/typo3/cms-core
Introduced in:
9.0.0Fixed in: 9.5.17Fix
composer require typo3/cms-core:^9.5.17Packagist/typo3/cms-core
Introduced in:
10.0.0Fixed in: 10.4.2Fix
composer require typo3/cms-core:^10.4.2References
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2020-11067[ADVISORY]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-11067.yaml[WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-11067.yaml[WEB]
- https://typo3.org/security/advisory/typo3-core-sa-2020-005[WEB]