Package Instance

Typo3 Backend Configuration XSS Vulnerability
The configuration module in the backend in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to obtain the encryption key via unspecified vectors.

Typo3 Vulnerable to Cache Poisoning
**Problem Description:** A request URL with arbitrary arguments, but still pointing to the home page of  a TYPO3 installation can be cached if the configuration option `config.prefixLocalAnchors` is used with the values "all" or "cached". The impact of this vulnerability is that unfamiliar looking links to the home page can end up in the cache, which leads to a reload of the page in the browser when section links are followed by web page visitors, instead of just directly jumping to the requested section of the page. TYPO3 versions 4.6.x and higher are only affected if the homepage is not a shortcut to a different page.

**Solution:** Removing the configuration options `config.prefixLocalAnchors` (and optionally also config.baseUrl) in favor of `config.absRefPrefix`

**Credits:** Thanks to Gernot Leitgab who discovered and reported the vulnerability.

Typo3 Install Tool XSS Vulnerability
Cross-site scripting (XSS) vulnerability in the Install Tool in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

ExtJS JavaScript framework used in TYPO3 vulnerable to Cross-site Scripting
Failing to properly validate the HTTP host-header TYPO3 CMS is susceptible to host spoofing. TYPO3 uses the HTTP host-header to generate absolute URLs in several places like 404 handling, http(s) enforcement, password reset links and many more. Since the host header itself is provided by the client it can be forged to any value, even in a name based virtual hosts environment. A blog post describes this problem in great detail.

TYPO3 Arbitrary Shell Execution in Swiftmailer library
The swiftmailer library in use allows to execute arbitrary shell commands if the "From" header comes from a non-trusted source and no "Return-Path" is configured. Affected are only TYPO3 installation the configuration option
```
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport']
```
is set to "sendmail". Installations with the default configuration are not affected.

TYPO3 allows remote authenticated backend users to unserialize arbitrary objects
view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a "missing signature (HMAC)."

Typo3 Backend History Module Vulnerable to XSS
Cross-site scripting (XSS) vulnerability in the Backend History module in TYPO3 4.5.x before 4.5.21, 4.6.x before 4.6.14, and 4.7.x before 4.7.6 allows remote authenticated backend users to inject arbitrary web script or HTML via unspecified vectors.

TYPO3 Cross-Site Scripting (XSS) vulnerabilities in Content Editing Wizards component
Multiple cross-site scripting (XSS) vulnerabilities in Content Editing Wizards in TYPO3 4.5.x before 4.5.32, 4.7.x before 4.7.17, 6.0.x before 6.0.12, 6.1.x before 6.1.7, and the development versions of 6.2 allow remote authenticated users to inject arbitrary web script or HTML via unspecified parameters.

TYPO3 vulnerable to Insecure Unserialize via Content Editing Wizards component
The Content Editing Wizards component in TYPO3 4.5.0 through 4.5.31, 4.7.0 through 4.7.16, 6.0.0 through 6.0.11, and 6.1.0 through 6.1.6 allows remote authenticated backend users to unserialize arbitrary PHP objects, delete arbitrary files, and possibly have other unspecified impacts via an unspecified parameter, related to a "missing signature."

Typo3 Exception Handler XSS
Cross-site scripting (XSS) vulnerability in the Exception Handler in TYPO3 4.4.x before 4.4.15, 4.5.x before 4.5.15, 4.6.x before 4.6.8, and 4.7 allows remote attackers to inject arbitrary web script or HTML via exception messages.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Incomplete block list vulnerability in the t3lib_div::quoteJSvalue API function in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote attackers to conduct cross-site scripting (XSS) attacks via certain HTML5 JavaScript events.