CVE-2022-23543 HTML attributes when attaching a YouTube link to the post

What is CVE-2022-23543?

CVE-2022-23543 is a medium-severity cross-site scripting vulnerability in mesosoi silverwaregames-io-issue-tracker, published on 19 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Silverware Games is a social network where people can play games online. Users can attach URLs to YouTube videos, the site will generate related `<iframe>` when the post will be published. The handler has some sort of protection so non-YouTube links can't be posted, as well as HTML tags are being stripped. However, it was still possible to add custom HTML attributes (e.g. `onclick=alert("xss")`) to the `<iframe>'. This issue was fixed in the version `1.1.34` and does not require any extra actions from our members. There has been no evidence that this vulnerability was used by anyone at this time.

Weakness: CWE-79, CWE-80

Which versions are affected by CVE-2022-23543?

It affects 1 product.

Products include Silverwaregames Silverwaregames.

How do I fix CVE-2022-23543?

No fix has been published for CVE-2022-23543 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-2022-23543 being exploited?

There is no known exploitation of CVE-2022-23543 in the wild and no public exploit code.

Other vulnerabilities in mesosoi silverwaregames-io-issue-tracker

• CVE-2022-36072 SilverwareGames.io used == for hashing instead of === Medium 5.9
• CVE-2023-40179 Silverware Games vulnerable to account enumeration via inconsistent responses Medium 5.3
• CVE-2023-40182 Information disclosure in silverwaregames-io-issue-tracker Low 3.7
• CVE-2023-29192 Missing authorization in silverwaregames-io-issue-tracker Low 2.7

Sources

• CVE record
• NVD
• OSV
• How this page is made