LibreOffice Hyperlink Document input validation

Summaryinfo

A vulnerability has been found in LibreOffice and classified as critical. This affects an unknown part of the component Hyperlink Handler. The manipulation as part of Document leads to input validation. This vulnerability is listed as CVE-2019-9847. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in LibreOffice (Office Suite Software) (the affected version unknown). This issue affects an unknown part of the component Hyperlink Handler. The manipulation as part of a Document leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in LibreOffice hyperlink processing allows an attacker to construct documents containing hyperlinks pointing to the location of an executable on the target users file system. If the hyperlink is activated by the victim the executable target is unconditionally launched. Under Windows and macOS when processing a hyperlink target explicitly activated by the user there was no judgment made on whether the target was an executable file, so such executable targets were launched unconditionally. This issue affects: All LibreOffice Windows and macOS versions prior to 6.1.6; LibreOffice Windows and macOS versions in the 6.2 series prior to 6.2.3.

The bug was discovered 05/08/2019. The weakness was presented 05/09/2019 (Website). It is possible to read the advisory at libreoffice.org. The identification of this vulnerability is CVE-2019-9847 since 03/17/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Office Suite Software

Name

• LibreOffice

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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