CVE-2018-6905 : What You Need to Know

A vulnerability in TYPO3 versions prior to 8.7.11 and 9.1.0 allowed for cross-site scripting attacks through manipulation of a specific variable.

Understanding CVE-2018-6905

This CVE entry identifies a security flaw in TYPO3 that could be exploited for cross-site scripting attacks.

What is CVE-2018-6905?

The vulnerability in the page module of TYPO3 versions before 8.7.11 and 9.1.0 enabled cross-site scripting attacks by manipulating the $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'] variable. An attacker, particularly an administrator, could leverage this flaw by inputting a specially crafted site name during installation.

The Impact of CVE-2018-6905

This vulnerability could lead to successful cross-site scripting attacks, potentially compromising the security and integrity of TYPO3 installations.

Technical Details of CVE-2018-6905

This section delves into the technical aspects of the CVE entry.

Vulnerability Description

The page module in TYPO3 versions before 8.7.11 and 9.1.0 was susceptible to XSS via the $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'] variable, as demonstrated by an admin entering a manipulated site name during installation.

Affected Systems and Versions

Affected Systems: TYPO3 versions prior to 8.7.11 and 9.1.0
Unaffected Systems: TYPO3 versions 8.7.11 and 9.1.0 onwards

Exploitation Mechanism

The vulnerability could be exploited by manipulating the $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'] variable during the installation process, allowing for the execution of cross-site scripting attacks.

Mitigation and Prevention

Protecting systems from CVE-2018-6905 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update TYPO3 to versions 8.7.11 or 9.1.0 to mitigate the vulnerability.
Implement input validation mechanisms to prevent malicious inputs.

Long-Term Security Practices

Regularly monitor and update TYPO3 installations to patch known vulnerabilities.
Educate administrators on secure configuration practices to prevent similar exploits.
Employ web application firewalls to detect and block XSS attacks.
Conduct security audits to identify and address potential vulnerabilities.

Patching and Updates

Apply security patches released by TYPO3 promptly to address known vulnerabilities and enhance system security.