Bug 1801919 (CVE-2020-6799)

Summary: CVE-2020-6799 Mozilla: Arbitrary code execution when opening pdf links from other applications, when Firefox is configured as default pdf reader
Product: [Other] Security Response Reporter: Doran Moppert <dmoppert>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jhorak, stransky
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: firefox 68.5 Doc Type: No Doc Update
Doc Text:
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Clone Of: Environment:
Last Closed: 2020-02-11 22:43:16 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1798927    

Description Doran Moppert 2020-02-11 22:42:07 UTC 
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.*



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-06/#CVE-2020-6799
Comment 1 Doran Moppert 2020-02-11 22:42:11 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Joshua Graham & Brendan Scarvell