CVE-2021-23999

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1691153	Exploit Issue Tracking Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-14/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-15/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-16/	Release Notes Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1691153	Exploit Issue Tracking Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-14/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-15/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-16/	Release Notes 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::::::::

History

21 Nov 2024, 05:52

Type	Values Removed	Values Added
References	~~() https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 - Exploit, Issue Tracking, Vendor Advisory~~	() https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 - Exploit, Issue Tracking, Vendor Advisory
References	~~() https://www.mozilla.org/security/advisories/mfsa2021-14/ - Release Notes, Vendor Advisory~~	() https://www.mozilla.org/security/advisories/mfsa2021-14/ - Release Notes, Vendor Advisory
References	~~() https://www.mozilla.org/security/advisories/mfsa2021-15/ - Release Notes, Vendor Advisory~~	() https://www.mozilla.org/security/advisories/mfsa2021-15/ - Release Notes, Vendor Advisory
References	~~() https://www.mozilla.org/security/advisories/mfsa2021-16/ - Release Notes, Vendor Advisory~~	() https://www.mozilla.org/security/advisories/mfsa2021-16/ - Release Notes, Vendor Advisory

26 Apr 2022, 15:31

Type	Values Removed	Values Added
References	~~(MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 - Issue Tracking, Permissions Required, Vendor Advisory~~	(MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 - Exploit, Issue Tracking, Vendor Advisory
CWE		CWE-697

02 Jul 2021, 17:23

Type	Values Removed	Values Added
CWE		CWE-269
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 6.8 v3 : 8.8
References	~~(MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 -~~	(MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 - Issue Tracking, Permissions Required, Vendor Advisory
References	~~(MISC) https://www.mozilla.org/security/advisories/mfsa2021-15/ -~~	(MISC) https://www.mozilla.org/security/advisories/mfsa2021-15/ - Release Notes, Vendor Advisory
References	~~(MISC) https://www.mozilla.org/security/advisories/mfsa2021-14/ -~~	(MISC) https://www.mozilla.org/security/advisories/mfsa2021-14/ - Release Notes, Vendor Advisory
References	~~(MISC) https://www.mozilla.org/security/advisories/mfsa2021-16/ -~~	(MISC) https://www.mozilla.org/security/advisories/mfsa2021-16/ - Release Notes, Vendor Advisory
CPE		cpe:2.3:a:mozilla:firefox:::::::: cpe:2.3:a:mozilla:firefox_esr:::::::: cpe:2.3:a:mozilla:thunderbird::::::::

24 Jun 2021, 14:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-06-24 14:15

Updated : 2024-11-21 05:52

NVD link : CVE-2021-23999

Mitre link : CVE-2021-23999

CVE.ORG link : CVE-2021-23999

JSON object : View

Products Affected

mozilla

firefox_esr
firefox
thunderbird

CWE

CWE-269

Improper Privilege Management

CWE-697

Incorrect Comparison

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8.8 /10