CVE-2020-6799

Name	CVE-2020-6799
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
firefox (PTS)	sid	113.0.2-1	fixed
firefox-esr (PTS)	buster	91.12.0esr-1~deb10u1	fixed
	buster (security)	102.11.0esr-1~deb10u1	fixed
	bullseye	102.10.0esr-1~deb11u1	fixed
	bullseye (security)	102.11.0esr-1~deb11u1	fixed
	bookworm, sid	102.11.0esr-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
firefox	source	(unstable)	(not affected)
firefox-esr	source	(unstable)	(not affected)

Notes

- firefox <not-affected> (Only affects Windows)
- firefox-esr <not-affected> (Only affects Windows)
https://www.mozilla.org/en-US/security/advisories/mfsa2020-05/#CVE-2020-6799
https://www.mozilla.org/en-US/security/advisories/mfsa2020-06/#CVE-2020-6799