LibreOffice up to 6.3.5 Encrypted Document missing encryption

Summaryinfo

A vulnerability marked as critical has been reported in LibreOffice up to 6.3.5. Affected by this vulnerability is an unknown functionality of the component Encrypted Document Handler. Performing a manipulation results in missing encryption. This vulnerability is reported as CVE-2020-12801. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in LibreOffice up to 6.3.5 (Office Suite Software). This affects an unknown code of the component Encrypted Document Handler. The manipulation with an unknown input leads to a missing encryption vulnerability. CWE is classifying the issue as CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was disclosed 05/18/2020. This vulnerability is uniquely identified as CVE-2020-12801 since 05/12/2020. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 214472 (Debian dla-3703 : fonts-opensymbol - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.3.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (214472). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Office Suite Software

Name

• LibreOffice

Version

• 6.3.0
• 6.3.1
• 6.3.2
• 6.3.3
• 6.3.4
• 6.3.5

License

• open-source

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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