SB2017012325 - Cross-site scripting in TYPO3

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2016-4056)

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in the Backend component in TYPO3 6.2.x before 6.2.19 when processing module parameter when creating a bookmark. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2016/04/21/1
• https://labs.integrity.pt/advisories/cve-pending-stored-cross-site-scripting-in-typo3-bookmarks/
• https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2016-006/