CVE-2020-12801

Crash-recovered MSOffice encrypted documents defaulted to not to using encryption on next save

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

If LibreOffice has an encrypted document open and crashes, that document is auto-saved encrypted. On restart, LibreOffice offers to restore the document and prompts for the password to decrypt it. If the recovery is successful, and if the file format of the recovered document was not LibreOffice's default ODF file format, then affected versions of LibreOffice default that subsequent saves of the document are unencrypted. This may lead to a user accidentally saving a MSOffice file format document unencrypted while believing it to be encrypted. This issue affects: LibreOffice 6-3 series versions prior to 6.3.6; 6-4 series versions prior to 6.4.3.

Si LibreOffice presenta un documento encriptado abierto y se bloquea, ese documento se guarda automáticamente encriptado. Al reiniciar, LibreOffice ofrece restaurar el documento y pide la contraseña para desencriptarlo. Si la recuperación es exitosa, y si el formato de archivo del documento recuperado no era el formato de archivo ODF predeterminado de LibreOffice, entonces las versiones afectadas predeterminadas de LibreOffice que guarden posteriormente el documento están sin cifrar. Esto puede conllevar a que un usuario guarde accidentalmente un documento de formato de archivo MSOffice sin cifrar mientras cree que está cifrado. Este problema afecta: LibreOffice serie 6-3 versiones de anteriores a 6.3.6; serie 6-4 versiones anteriores a 6.4.3.

*Credits: Thanks to Tomas Florian <tomas@armoreye.ca> for raising awareness of the issue

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2020-05-12 CVE Reserved
2020-05-18 CVE Published
2024-03-22 EPSS Updated
2024-11-18 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-311: Missing Encryption of Sensitive Data
CWE-312: Cleartext Storage of Sensitive Information

CAPEC

References (3)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/12/msg00026.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00011.html	2023-12-31
https://www.libreoffice.org/about-us/security/advisories/CVE-2020-12801	2023-12-31

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libreoffice Search vendor "Libreoffice"		Libreoffice Search vendor "Libreoffice" for product "Libreoffice"				>= 6.3.0 < 6.3.6 Search vendor "Libreoffice" for product "Libreoffice" and version " >= 6.3.0 < 6.3.6"		-		Affected
Libreoffice Search vendor "Libreoffice"		Libreoffice Search vendor "Libreoffice" for product "Libreoffice"				>= 6.4.0 < 6.4.3 Search vendor "Libreoffice" for product "Libreoffice" and version " >= 6.4.0 < 6.4.3"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected