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CVE Record

CVE-2020-12803: XForms submissions could overwrite local files

ODF documents can contain forms to be filled out by the user. Similar to HTML forms, the contained form data can be submitted to a URI, for example, to an external web server. To create submittable forms, ODF implements the XForms W3C standard, which allows data to be submitted without the need for macros or other active scripting Prior to version 6.4.4 LibreOffice allowed forms to be submitted to any URI, including file: URIs, enabling form submissions to overwrite local files. User-interaction is required to submit the form, but to avoid the possibility of malicious documents engineered to maximize the possibility of inadvertent user submission this feature has now been limited to http[s] URIs, removing the possibility to overwrite local files. This issue affects: The Document Foundation LibreOffice versions prior to 6.4.4.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

A malicious ODF document could trick a LibreOffice user into submitting an embedded form that overwrites local files. It does not require macros, but it does require user interaction. LibreOffice fixed this by limiting XForms submissions to HTTP and HTTPS URIs in version 6.4.4. Exposure is most likely on endpoints running LibreOffice before 6.4.4 or unpatched distribution packages, especially where users open untrusted ODF documents. Fedora, openSUSE, and Debian LTS issued related package updates. Treat this as a moderate endpoint document-handling risk. It is not cited as actively exploited in the provided sources, but outdated LibreOffice installations should be remediated because document-based attacks are practical and user interaction can be induced. Mitigation focus: Upgrade LibreOffice to version 6.4.4 or later.; Apply vendor-patched LibreOffice packages from the operating system distribution.; Prioritize systems where users open untrusted ODF documents..

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Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
The Document FoundationLibreOfficeunspecifiedListed
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