Vulnerability identifier: #VU56066
Vulnerability risk: Low
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-79
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Movable Type
Web applications /
CMS
Movable Type Advanced
Web applications /
CMS
Movable Type Premium
Web applications /
CMS
Movable Type Premium Advanced
Web applications /
CMS
Vendor: Six Apart Ltd
Description
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 Create screens of Entry, Page, and Content Type. A remote attacker can trick the victim to follow a specially crafted link 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Movable Type: 6.0 - r.4903
Movable Type Advanced: r.4903
Movable Type Premium: 1.44
Movable Type Premium Advanced: 1.44
External links
http://jvn.jp/en/jp/JVN97545738/index.html
http://movabletype.org/news/2021/08/mt-780-681-released.html
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.