CVE-2021-3847

An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.

CVSS v3 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2009704	Issue Tracking Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/10/14/3	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

History

11 Apr 2022, 20:31

Type	Values Removed	Values Added
CWE		CWE-281
References	~~(MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2009704 -~~	(MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2009704 - Issue Tracking, Third Party Advisory
References	~~(MISC) https://www.openwall.com/lists/oss-security/2021/10/14/3 -~~	(MISC) https://www.openwall.com/lists/oss-security/2021/10/14/3 - Mailing List, Third Party Advisory
CPE		cpe:2.3:o:fedoraproject:fedora:34:::::::* cpe:2.3:o:linux:linux_kernel::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.2 v3 : 7.8

01 Apr 2022, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-04-01 23:15

Updated : 2024-02-04 22:29

NVD link : CVE-2021-3847

Mitre link : CVE-2021-3847

CVE.ORG link : CVE-2021-3847

JSON object : View

Products Affected

fedoraproject

fedora

linux

linux_kernel

CWE

CWE-281

Improper Preservation of Permissions

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