In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that the backend user interface and install tool are vulnerable to a same-site request forgery. A backend user can be tricked into interacting with a malicious resource an attacker previously managed to upload to the web server. Scripts are then executed with the privileges of the victims' user session. In a worst-case scenario, new admin users can be created which can directly be used by an attacker. The vulnerability is basically a cross-site request forgery (CSRF) triggered by a cross-site scripting vulnerability (XSS) - but happens on the same target host - thus, it's actually a same-site request forgery. Malicious payload such as HTML containing JavaScript might be provided by either an authenticated backend user or by a non-authenticated user using a third party extension, e.g. file upload in a contact form with knowing the target location. To be successful, the attacked victim requires an active and valid backend or install tool user session at the time of the attack. This has been fixed in 9.5.17 and 10.4.2. The deployment of additional mitigation techniques is suggested as described below. - Sudo Mode Extension This TYPO3 extension intercepts modifications to security relevant database tables, e.g. those storing user accounts or storages of the file abstraction layer. Modifications need to confirmed again by the acting user providing their password again. This technique is known as sudo mode. This way, unintended actions happening in the background can be mitigated. - https://github.com/FriendsOfTYPO3/sudo-mode - https://extensions.typo3.org/extension/sudo_mode - Content Security Policy Content Security Policies tell (modern) browsers how resources served a particular site are handled. It is also possible to disallow script executions for specific locations. In a TYPO3 context, it is suggested to disallow direct script execution at least for locations /fileadmin/ and /uploads/.
CVSS Score
8.0
EPSS Score
0.005
Published
2020-05-14
In TYPO3 CMS versions 10.4.0 and 10.4.1, it has been discovered that time-based attacks can be used with the password reset functionality for backend users. This allows an attacker to mount user enumeration based on email addresses assigned to backend user accounts. This has been fixed in 10.4.2.
CVSS Score
3.7
EPSS Score
0.003
Published
2020-05-13
In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.17 and greater than or equal to 10.0.0 and less than 10.4.2, it has been discovered that HTML placeholder attributes containing data of other database records are vulnerable to cross-site scripting. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
CVSS Score
5.4
EPSS Score
0.002
Published
2020-05-13
In TYPO3 CMS greater than or equal to 9.5.12 and less than 9.5.17, and greater than or equal to 10.2.0 and less than 10.4.2, it has been discovered that link tags generated by typolink functionality are vulnerable to cross-site scripting; properties being assigned as HTML attributes have not been parsed correctly. This has been fixed in 9.5.17 and 10.4.2.
CVSS Score
5.4
EPSS Score
0.002
Published
2020-05-13
SQL injection vulnerability in the Post data records to facebook (bc_post2facebook) extension before 0.2.2 for TYPO3 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
CVSS Score
7.5
EPSS Score
0.004
Published
2012-02-14
The System Utilities (sysutils) extension 1.0.3 and earlier for TYPO3 allows remote attackers to obtain sensitive information via unspecified vectors related to improper "protection" of the "backup output directory."
CVSS Score
5.0
EPSS Score
0.004
Published
2012-02-14
Unspecified vulnerability in the Webservices for TYPO3 (typo3_webservice) extension before 0.3.8 for TYPO3 allows remote authenticated users to execute arbitrary code via unknown vectors.
CVSS Score
6.5
EPSS Score
0.014
Published
2012-02-14
Cross-site scripting (XSS) vulnerability in the Euro Calculator (skt_eurocalc) extension 0.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
CVSS Score
4.3
EPSS Score
0.003
Published
2012-02-14
Cross-site scripting (XSS) vulnerability in the Yet another Google search (ya_googlesearch) extension before 0.3.10 for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
CVSS Score
4.3
EPSS Score
0.003
Published
2012-02-14
Cross-site scripting (XSS) vulnerability in the Terminal PHP Shell (terminal) extension 0.3.2 and earlier for TYPO3 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
CVSS Score
3.5
EPSS Score
0.002
Published
2012-02-14