LOW

GHSA-989h-wv8x-933p

TYPO3 cross-site scripting (XSS)

Quick fix

GHSA-989h-wv8x-933p — typo3/cms: upgrade to the fixed version with the command below.

composer require typo3/cms:^6.2.15

Details

The sanitizeLocalUrl function in TYPO3 6.x before 6.2.15, 7.x before 7.4.0, 4.5.40, and earlier allows remote authenticated users to bypass the XSS filter and conduct cross-site scripting (XSS) attacks via a base64 encoded data URI, as demonstrated by the (1) returnUrl parameter to show_rechis.php and the (2) redirect_url parameter to index.php.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/typo3/cms

Introduced in: 6.0Fixed in: 6.2.15

Fixcomposer require typo3/cms:^6.2.15

Packagist/typo3/cms

Introduced in: 7.0Fixed in: 7.4.0

Fixcomposer require typo3/cms:^7.4.0

Packagist/typo3/cms

Introduced in: 4.0

No fixed version published yet for typo3/cms (composer). Pin to a known-safe version or switch to an alternative.

References

https://nvd.nist.gov/vuln/detail/CVE-2015-5956[ADVISORY]
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2015-5956.yaml[WEB]
https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2015-009[WEB]
http://packetstormsecurity.com/files/133551/Typo3-CMS-6.2.14-4.5.40-Cross-Site-Scripting.html[WEB]
http://seclists.org/fulldisclosure/2015/Sep/57[WEB]
http://www.securityfocus.com/archive/1/536464/100/0/threaded[WEB]
http://www.securitytracker.com/id/1033551[WEB]