CVE-2021-38506

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-38506
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.

4.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.3 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 Issue Tracking Permissions Required Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202202-03 Third Party Advisory
https://security.gentoo.org/glsa/202208-14 Third Party Advisory
https://www.debian.org/security/2021/dsa-5026 Third Party Advisory
https://www.debian.org/security/2022/dsa-5034 Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-48/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-49/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-50/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 Issue Tracking Permissions Required Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202202-03 Third Party Advisory
https://security.gentoo.org/glsa/202208-14 Third Party Advisory
https://www.debian.org/security/2021/dsa-5026 Third Party Advisory
https://www.debian.org/security/2022/dsa-5034 Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-48/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-49/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-50/ Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
History

21 Nov 2024, 06:17

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 - Issue Tracking, Permissions Required, Vendor Advisory () https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 - Issue Tracking, Permissions Required, Vendor Advisory
References () https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html - Mailing List, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html - Mailing List, Third Party Advisory
References () https://security.gentoo.org/glsa/202202-03 - Third Party Advisory () https://security.gentoo.org/glsa/202202-03 - Third Party Advisory
References () https://security.gentoo.org/glsa/202208-14 - Third Party Advisory () https://security.gentoo.org/glsa/202208-14 - Third Party Advisory
References () https://www.debian.org/security/2021/dsa-5026 - Third Party Advisory () https://www.debian.org/security/2021/dsa-5026 - Third Party Advisory
References () https://www.debian.org/security/2022/dsa-5034 - Third Party Advisory () https://www.debian.org/security/2022/dsa-5034 - Third Party Advisory
References () https://www.mozilla.org/security/advisories/mfsa2021-48/ - Vendor Advisory () https://www.mozilla.org/security/advisories/mfsa2021-48/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2021-49/ - Vendor Advisory () https://www.mozilla.org/security/advisories/mfsa2021-49/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2021-50/ - Vendor Advisory () https://www.mozilla.org/security/advisories/mfsa2021-50/ - Vendor Advisory

10 Aug 2022, 20:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202208-14 -

28 Feb 2022, 22:10

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
References (MLIST) https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html - (MLIST) https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html - Mailing List, Third Party Advisory
References (MLIST) https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html - (MLIST) https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html - Mailing List, Third Party Advisory
References (DEBIAN) https://www.debian.org/security/2022/dsa-5034 - (DEBIAN) https://www.debian.org/security/2022/dsa-5034 - Third Party Advisory
References (GENTOO) https://security.gentoo.org/glsa/202202-03 - (GENTOO) https://security.gentoo.org/glsa/202202-03 - Third Party Advisory

22 Feb 2022, 01:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202202-03 -

04 Jan 2022, 12:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html -

03 Jan 2022, 11:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2022/dsa-5034 -

29 Dec 2021, 16:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html -

21 Dec 2021, 19:14

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References (DEBIAN) https://www.debian.org/security/2021/dsa-5026 - (DEBIAN) https://www.debian.org/security/2021/dsa-5026 - Third Party Advisory

20 Dec 2021, 00:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2021/dsa-5026 -

09 Dec 2021, 19:28

Type Values Removed Values Added
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
CWE CWE-1021
CVSS v2 : unknown
v3 : unknown 		v2 : 4.3
v3 : 4.3
References (MISC) https://www.mozilla.org/security/advisories/mfsa2021-49/ - (MISC) https://www.mozilla.org/security/advisories/mfsa2021-49/ - Vendor Advisory
References (MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 - (MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 - Issue Tracking, Permissions Required, Vendor Advisory
References (MISC) https://www.mozilla.org/security/advisories/mfsa2021-48/ - (MISC) https://www.mozilla.org/security/advisories/mfsa2021-48/ - Vendor Advisory
References (MISC) https://www.mozilla.org/security/advisories/mfsa2021-50/ - (MISC) https://www.mozilla.org/security/advisories/mfsa2021-50/ - Vendor Advisory

08 Dec 2021, 22:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-12-08 22:15

Updated : 2024-11-21 06:17

NVD link : CVE-2021-38506

Mitre link : CVE-2021-38506

CVE.ORG link : CVE-2021-38506

JSON object : View

Products Affected

mozilla

  • firefox_esr
  • firefox
  • thunderbird

debian

  • debian_linux
CWE
CWE-1021

Improper Restriction of Rendered UI Layers or Frames