CVE-2020-23370 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script or HTML via a malicious SWF file upload in YzmCMS, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-23370?
CVE-2020-23370 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 May 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
In YzmCMS 5.6, stored XSS exists via the common/static/plugin/ueditor/1.4.3.3/php/controller.php action parameter, which allows remote attackers to upload a swf file. The swf file can be injected with arbitrary web script or HTML.
Weakness: CWE-79
Which versions are affected by CVE-2020-23370?
It affects 1 product.
Products include Yzmcms Yzmcms.
How do I fix CVE-2020-23370?
No fix has been published for CVE-2020-23370 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-23370 being exploited?
There is no known exploitation of CVE-2020-23370 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cmgq-fmcq-h3xj.