Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Required
Privileges Required
None
Attack Vector
Network
0

CVE-2021-38506

Disclosure Date: December 08, 2021
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

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CVSS V3 Severity and Metrics
Base Score:
4.3 Medium
Impact Score:
1.4
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
Low
Availability (A):
None

General Information

Vendors

  • debian,
  • mozilla

Products

  • debian linux 10.0,
  • debian linux 11.0,
  • debian linux 9.0,
  • firefox,
  • firefox esr,
  • thunderbird
Technical Analysis