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CVE-2021-23999

Published: Jun 24, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-269
NVD MITRE
8.8CVSSHIGH
EPSS Score
1.3%
Top 33.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-269CWE-697

Affected Products

Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
red hat inc.commercialUSOperating Systemsaka red hat
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
canonical ltd.commercialGBOperating Systemsaka canonical
novell inc.commercialUSOperating Systems
and 26 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2021-23999&#13;
access.redhat.com
https://redos.red-soft.ru/updatesec/&#13;
redos.red-soft.ru
https://security-tracker.debian.org/tracker/CVE-2021-23999&#13;
security-tracker.debian.org
and 14 more references View all →

Timeline

Published
Jun 24, 2021
Last Updated
Nov 21, 2024

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