CVE-2020-35112 Information

Description

If a user downloaded a file lacking an extension on Windows and then \Open-ed it from the downloads panel if there was an executable file in the downloads directory with the same name but with an executable extension (such as .bat or .exe) that executable would have been launched instead. Note: This issue only affected Windows operating systems. Other operating systems are unaffected.. This vulnerability affects Firefox < 84 Thunderbird < 78.6 and Firefox ESR < 78.6.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://www.mozilla.org/security/advisories/mfsa2020-54/ https://www.mozilla.org/security/advisories/mfsa2020-55/ https://www.mozilla.org/security/advisories/mfsa2020-56/ https://bugzilla.mozilla.org/show_bug.cgi?id=1661365

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8