Meta
- CVSS:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
(8.2)- CWE-325, CWE-20, CWE-200, CWE-502
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.
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)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 high (8.2) based on mentioned attack chains and the requirement of having a valid backend user session (authenticated).
Update to TYPO3 versions 9.5.20 or 10.4.6 that fix the problem described.
Thanks to TYPO3 security team member Oliver Hader who reported and fixed the issue.
{ "nvd_published_at": "2020-07-29T17:15:00Z", "cwe_ids": [ "CWE-20", "CWE-200", "CWE-325", "CWE-327", "CWE-502" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2020-07-29T16:14:21Z" }