gristlabs grist-core up to 1.3.1 HyperLink Cell cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in gristlabs grist-core up to 1.3.1. Affected is an unknown function of the component HyperLink Cell Handler. Such manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2024-56359. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in gristlabs grist-core up to 1.3.1 and classified as problematic. Affected by this issue is an unknown code block of the component HyperLink Cell Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

grist-core is a spreadsheet hosting server. A user visiting a malicious document and clicking on a link in a HyperLink cell using a control modifier (meaning for example Ctrl+click) could have their account compromised, since the link could use the javascript: scheme and be evaluated in the context of their current page. This issue has been patched in version 1.3.2. Users are advised to upgrade. Users unable to upgrade should avoid clicking on HyperLink cell links using a control modifier in documents prepared by people they do not trust.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2024-56359 since 12/20/2024. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 1.3.2 eliminates this vulnerability. Applying the patch a792bdc43b456dbdd6fdc50d8747f4c349fab2f4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• gristlabs

Name

• grist-core

Version

• 1.3.0
• 1.3.1

License

• open-source

Website

• Product: https://github.com/gristlabs/grist-core/

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