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Vulnerability of LibreOffice: information disclosure by encryption disabling

Synthesis of the vulnerability 

An attacker can corrupt an encrypted MS-Office document to be edited with LibreOffice, in order to disable the encryption on next save and so get sensitive data.
Impacted products: LibreOffice.
Severity of this bulletin: 1/4.
Creation date: 18/05/2020.
Références of this threat: CERTFR-2020-AVI-298, CVE-2020-12801, VIGILANCE-VUL-32289.

Description of the vulnerability 

An attacker can corrupt an encrypted MS-Office document to be edited with LibreO...
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This cybersecurity bulletin impacts software or systems such as LibreOffice.

Our Vigil@nce team determined that the severity of this cybersecurity weakness is low.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer vulnerability bulletin.

Solutions for this threat 

This vulnerability fix will be public soon.
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