SB2017060102 - XSS in Tiki Wiki CMS Groupware

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2017-9305)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in tiki-batch_send_newsletter.php (vulnerable code resides within lib/core/TikiFilter/PreventXss.php). A remote attacker can trick the victim to follow a specially crafted link, bypass implemented XSS protection and execute arbitrary HTML and script code in user's browser in 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

• https://github.com/tikiorg/tiki/commit/6c016e8f066d2f404b18eaa1af7fa0c7a9651ccd
• https://www.cdxy.me/?p=763