CVE-2020-6797

Description

By downloading a file with the .fileloc extension, a semi-privileged extension could launch an arbitrary application on the user's computer. The attacker is restricted as they are unable to download non-quarantined files or supply command line arguments to the application, limiting the impact. Note: this issue only occurs on Mac OSX. Other operating systems are unaffected. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.02% Top 25%
Vendor Advisory gentoo.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2020-05/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-06/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-07/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1596668 issue tracking permissions required
https://security.gentoo.org/glsa/202003-02 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-6797?
CVE-2020-6797 has been scored as a medium severity vulnerability.
How to fix CVE-2020-6797?
To fix CVE-2020-6797, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-6797 being actively exploited in the wild?
It is possible that CVE-2020-6797 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-6797?
CVE-2020-6797 affects Mozilla Thunderbird, Mozilla Firefox.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.