The Authentication component in TYPO3 before 6.2, when salting for password hashing is disabled, does not require knowledge of the cleartext password if the password hash is known, which allows remote attackers to bypass authentication and gain access to the backend by leveraging knowledge of a password hash.

Cross-site scripting (XSS) vulnerability in the Install Tool subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote attackers to inject arbitrary web script or HTML via unspecified parameters.

The Install Tool subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote attackers to gain access by using only the password's md5 hash as a credential.

Cross-site scripting (XSS) vulnerability in the t3lib_div::quoteJSvalue API function in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to the sanitizing algorithm.

SQL injection vulnerability in the traditional frontend editing feature in the Frontend Editing subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote authenticated users to execute arbitrary SQL commands via unspecified parameters.

The Backend subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2, when the DAM extension or ftp upload is enabled, allows remote authenticated users to execute arbitrary commands via shell metacharacters in a filename.

The Backend subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote authenticated users to place arbitrary web sites in TYPO3 backend framesets via crafted parameters, related to a "frame hijacking" issue.

Multiple cross-site scripting (XSS) vulnerabilities in the Backend subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

The Backend subcomponent in TYPO3 4.0.13 and earlier, 4.1.x before 4.1.13, 4.2.x before 4.2.10, and 4.3.x before 4.3beta2 allows remote authenticated users to determine an encryption key via crafted input to a tt_content form element.

Multiple cross-site scripting (XSS) vulnerabilities in the backend user interface in TYPO3 3.3.x through 3.8.x, 4.0 before 4.0.12, 4.1 before 4.1.10, 4.2 before 4.2.6, and 4.3alpha1 allow remote attackers to inject arbitrary web script or HTML via unspecified fields.

The Indexed Search Engine (indexed_search) system extension in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 allows remote attackers to execute arbitrary commands via a crafted filename containing shell metacharacters, which is not properly handled by the command-line indexer.

Multiple cross-site scripting (XSS) vulnerabilities in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 allow remote attackers to inject arbitrary web script or HTML via the (1) name and (2) content of indexed files to the (a) Indexed Search Engine (indexed_search) system extension; (b) unspecified test scripts in the ADOdb system extension; and (c) unspecified vectors in the Workspace module.

Session fixation vulnerability in the authentication library in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 allows remote attackers to hijack web sessions via unspecified vectors related to (1) frontend and (2) backend authentication.

The System extension Install tool in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 creates the encryption key with an insufficiently random seed, which makes it easier for attackers to crack the key.

TYPO3 4.0.x before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.2.1, uses an insufficiently restrictive default fileDenyPattern for Apache, which allows remote attackers to bypass security restrictions and upload configuration files such as .htaccess, or conduct file upload attacks using multiple extensions.

Cross-site scripting (XSS) vulnerability in fe_adminlib.inc in TYPO3 4.0.x before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.2.1, as used in extensions such as (1) direct_mail_subscription, (2) feuser_admin, and (3) kb_md5fepw, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

SQL injection vulnerability in the indexed_search system extension in TYPO3 3.x, 4.0 through 4.0.7, and 4.1 through 4.1.3 allows remote authenticated users to execute arbitrary SQL commands via unspecified vectors.

The start function in class.t3lib_formmail.php in TYPO3 before 4.0.5, 4.1beta, and 4.1RC1 allows attackers to inject arbitrary email headers via unknown vectors. NOTE: some details were obtained from third party information.