Mozilla Firefox/Firefox ESR Command Line Argument input validation

Summaryinfo

A vulnerability identified as critical has been detected in Mozilla Firefox and Firefox ESR. This impacts an unknown function. This manipulation as part of Command Line Argument causes input validation. This vulnerability is registered as CVE-2020-6799. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox and Firefox ESR (Web Browser) (affected version not known). It has been declared as critical. Affected by this vulnerability is some unknown functionality. The manipulation as part of a Command Line Argument leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Command line arguments could have been injected during Firefox invocation as a shell handler for certain unsupported file types. This required Firefox to be configured as the default handler for a given file type and for a file downloaded to be opened in a third party application that insufficiently sanitized URL data. In that situation, clicking a link in the third party application could have been used to retrieve and execute files whose location was supplied through command line arguments. Note: This issue only affects Windows operating systems and when Firefox is configured as the default handler for non-default filetypes. Other operating systems are unaffected. This vulnerability affects Firefox < 73 and Firefox < ESR68.5.

The weakness was published 03/02/2020. This vulnerability is known as CVE-2020-6799 since 01/10/2020. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/02/2020).

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox
• Firefox ESR

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

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CPE 2.2info

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