Cross-site scripting in TYPO3

1) Cross-site scripting

EUVDB-ID: #VU39800

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-4056

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

TYPO3: 6.2 - 6.2.18

CPE2.3

• cpe:2.3:a:typo3:typo3:6.2:*:*:*:*:*:*:*
• cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
• cpe:2.3:a:typo3:typo3:6.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:typo3:typo3:6.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:typo3:typo3:6.2.8:*:*:*:*:*:*:*

External links

https://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/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.