CVE-2020-6797

MEDIUM

Firefox < 73.0 and Firefox ESR < 68.5.0 - Arbitrary Application Launch via .fileloc Extension

Title source: llm
STIX 2.1

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.

References (5)

Core 5
Core References
Issue Tracking, Permissions Required x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1596668
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202003-02

Scores

CVSS v3 4.3
EPSS 0.0102
EPSS Percentile 77.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Details

CWE
CWE-20
Status published
Products (3)
mozilla/firefox < 73.0
mozilla/firefox_esr < 68.5.0
mozilla/thunderbird < 68.5.0
Published Mar 02, 2020
Tracked Since Feb 18, 2026