Typo3 Cms vulnerabilities

CVE-2020-26227 [MEDIUM] CWE-79 Cross-Site Scripting in Fluid view helpers Cross-Site Scripting in Fluid view helpers > ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (5.7) > * CWE-79 ### Problem It has been discovered that system extension Fluid (`typo3/cms-fluid`) of the TYPO3 core is vulnerable to cross-site scripting passing user-controlled data as argument to Fluid view helpers. ``` ``` ### Solution Update to TYPO3 versions 9.5.23 or 10.4.10 that fix th

CVE-2020-26228 [HIGH] CWE-312 Cleartext storage of session identifier Cleartext storage of session identifier User session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. ### Solution Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described. ### Credits

CVE-2020-26229 [LOW] CWE-611 XML External Entity in Dashboard Widget XML External Entity in Dashboard Widget ### Problem It has been discovered that RSS widgets are susceptible to XML external entity processing. This vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions. At least with _libxml2_ version 2.9, the processing of XML external entities is disabled per de

CVE-2020-15241 [MEDIUM] CWE-601 Cross-Site Scripting in ternary conditional operator Cross-Site Scripting in ternary conditional operator > ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C`(5.0) > * CWE-79 --- :information_source: This vulnerability has been fixed in May 2019 already, CVE and GHSA were assigned later in October 2020 --- ### Problem It has been discovered that the Fluid Engine (package `typo3fluid/fluid`) is vulnerable to cross-site scripting wh

CVE-2020-15099 [HIGH] CWE-20 Exposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMS 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 expose

CVE-2020-15098 [HIGH] CWE-20 Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS > ### 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 ### Problem It has been discovered that an internal verification mechanism can be used to generate arbitrary checksums. This allows to inject arbitrary data

CVE-2020-11067 [HIGH] CWE-502 Insecure Deserialization in Backend User Settings in TYPO3 CMS Insecure Deserialization in Backend User Settings in TYPO3 CMS 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 probl

CVE-2020-11069 [HIGH] CWE-346 Backend Same-Site Request Forgery in TYPO3 CMS Backend Same-Site Request Forgery in TYPO3 CMS > ### Meta > * CVSS v3.1: AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C > * CWE-352 > * CWE-346 ### Problem It has been discovered that backend user interface and install tool are vulnerable to same-origin 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 t

CVE-2020-11066 [HIGH] CWE-1321 Class destructors causing side-effects when being unserialized in TYPO3 CMS Class destructors causing side-effects when being unserialized in TYPO3 CMS Calling unserialize() on malicious user-submitted content can result in the following scenarios: - trigger deletion of arbitrary directory in file system (if writable for web server) - trigger message submission via email using identity of web site (mail relay) Another insecure deserialization vulnerability is req

CVE-2020-11065 [MEDIUM] CWE-79 Cross-Site Scripting in TYPO3 CMS Link Handling Cross-Site Scripting in TYPO3 CMS Link Handling 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. 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-2020-003

CVE-2020-11064 [MEDIUM] CWE-79 Cross-Site Scripting in TYPO3 CMS Form Engine Cross-Site Scripting in TYPO3 CMS Form Engine 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. Update to TYPO3 versions 9.5.17 or 10.4.2

CVE-2020-11063 [LOW] CWE-203 Information Disclosure in Password Reset Information Disclosure in Password Reset In TYPO3 CMS 10.4.0 through 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. ### References * https://typo3.org/security/advisory/typo3-core-sa-2020-001

CVE-2019-10912 [HIGH] CWE-502 Deserialization of untrusted data in Symfony Deserialization of untrusted data in Symfony In Symfony before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7, it is possible to cache objects that may contain bad user input. On serialization or unserialization, this could result in the deletion of files that the current user has access to. This is related to symfony/cache and symfony/phpunit-bridge.

CVE-2018-17960 [MEDIUM] CWE-79 Ckeditor XSS Vulnerability Ckeditor XSS Vulnerability CKEditor 4.x before 4.11.0 allows user-assisted XSS involving a source-mode paste. It was possible to execute XSS inside the CKEditor source area after persuading the victim to: (i) switch CKEditor to source mode, then (ii) paste a specially crafted HTML code, prepared by the attacker, into the opened CKEditor source area, and (iii) switch back to WYSIWYG mode. Although this is an unlikely scenario, it is recom

CVE-2018-14041 [MEDIUM] CWE-79 Bootstrap Cross-site Scripting vulnerability Bootstrap Cross-site Scripting vulnerability In Bootstrap 4.x before 4.1.2, XSS is possible in the data-target property of scrollspy. This is similar to CVE-2018-14042.