#VU27016 Cross-site scripting in wagtail - CVE-2020-11001

Vulnerability identifier: #VU27016

Vulnerability risk: Low

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

CVE-ID: CVE-2020-11001

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
wagtail
Web applications / CMS

Vendor: Torchbox

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 on the page revision comparison view within the Wagtail admin interface. A remote authenticated 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

wagtail: 1.9 - 2.8

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External links
https://github.com/wagtail/wagtail/commit/61045ceefea114c40ac4b680af58990dbe732389
https://github.com/wagtail/wagtail/releases/tag/v2.8.1
https://github.com/wagtail/wagtail/security/advisories/GHSA-v2wc-pfq2-5cm6

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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