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Vulnerability Details :

CVE-2021-3995

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-23 Aug, 2022 | 00:00
Updated At-03 Aug, 2024 | 17:16
Rejected At-
Credits

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:23 Aug, 2022 | 00:00
Updated At:03 Aug, 2024 | 17:16
Rejected At:
▼CVE Numbering Authority (CNA)

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

Affected Products
Vendor
n/a
Product
util-linux
Versions
Affected
  • Fixed in util-linux v2.37.3
Problem Types
TypeCWE IDDescription
CWECWE-552CWE-552 - Files or Directories Accessible to External Parties
Type: CWE
CWE ID: CWE-552
Description: CWE-552 - Files or Directories Accessible to External Parties
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes
N/A
https://www.openwall.com/lists/oss-security/2022/01/24/2
N/A
https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8d
N/A
https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995
N/A
http://www.openwall.com/lists/oss-security/2022/11/30/2
mailing-list
http://seclists.org/fulldisclosure/2022/Dec/4
mailing-list
http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html
N/A
https://security.netapp.com/advisory/ntap-20221209-0002/
N/A
https://security.gentoo.org/glsa/202401-08
vendor-advisory
Hyperlink: https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes
Resource: N/A
Hyperlink: https://www.openwall.com/lists/oss-security/2022/01/24/2
Resource: N/A
Hyperlink: https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8d
Resource: N/A
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2022/11/30/2
Resource:
mailing-list
Hyperlink: http://seclists.org/fulldisclosure/2022/Dec/4
Resource:
mailing-list
Hyperlink: http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20221209-0002/
Resource: N/A
Hyperlink: https://security.gentoo.org/glsa/202401-08
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes
x_transferred
https://www.openwall.com/lists/oss-security/2022/01/24/2
x_transferred
https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8d
x_transferred
https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995
x_transferred
http://www.openwall.com/lists/oss-security/2022/11/30/2
mailing-list
x_transferred
http://seclists.org/fulldisclosure/2022/Dec/4
mailing-list
x_transferred
http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html
x_transferred
https://security.netapp.com/advisory/ntap-20221209-0002/
x_transferred
https://security.gentoo.org/glsa/202401-08
vendor-advisory
x_transferred
Hyperlink: https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes
Resource:
x_transferred
Hyperlink: https://www.openwall.com/lists/oss-security/2022/01/24/2
Resource:
x_transferred
Hyperlink: https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8d
Resource:
x_transferred
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995
Resource:
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2022/11/30/2
Resource:
mailing-list
x_transferred
Hyperlink: http://seclists.org/fulldisclosure/2022/Dec/4
Resource:
mailing-list
x_transferred
Hyperlink: http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html
Resource:
x_transferred
Hyperlink: https://security.netapp.com/advisory/ntap-20221209-0002/
Resource:
x_transferred
Hyperlink: https://security.gentoo.org/glsa/202401-08
Resource:
vendor-advisory
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:23 Aug, 2022 | 20:15
Updated At:07 Jan, 2024 | 09:15

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Type: Primary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CPE Matches
Linux Kernel Organization, Inc
kernel
>>util-linux>>Versions from 2.34(inclusive) to 2.37.3(exclusive)
cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-552Primarysecalert@redhat.com
CWE-552Secondarynvd@nist.gov
CWE ID: CWE-552
Type: Primary
Source: secalert@redhat.com
CWE ID: CWE-552
Type: Secondary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.htmlsecalert@redhat.com
Third Party Advisory
VDB Entry
http://seclists.org/fulldisclosure/2022/Dec/4secalert@redhat.com
Mailing List
Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/30/2secalert@redhat.com
Mailing List
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995secalert@redhat.com
Broken Link
Issue Tracking
https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8dsecalert@redhat.com
Patch
Third Party Advisory
https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotessecalert@redhat.com
Release Notes
Vendor Advisory
https://security.gentoo.org/glsa/202401-08secalert@redhat.com
N/A
https://security.netapp.com/advisory/ntap-20221209-0002/secalert@redhat.com
Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/01/24/2secalert@redhat.com
Exploit
Mailing List
Patch
Third Party Advisory
Hyperlink: http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html
Source: secalert@redhat.com
Resource:
Third Party Advisory
VDB Entry
Hyperlink: http://seclists.org/fulldisclosure/2022/Dec/4
Source: secalert@redhat.com
Resource:
Mailing List
Third Party Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2022/11/30/2
Source: secalert@redhat.com
Resource:
Mailing List
Third Party Advisory
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995
Source: secalert@redhat.com
Resource:
Broken Link
Issue Tracking
Hyperlink: https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8d
Source: secalert@redhat.com
Resource:
Patch
Third Party Advisory
Hyperlink: https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes
Source: secalert@redhat.com
Resource:
Release Notes
Vendor Advisory
Hyperlink: https://security.gentoo.org/glsa/202401-08
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20221209-0002/
Source: secalert@redhat.com
Resource:
Third Party Advisory
Hyperlink: https://www.openwall.com/lists/oss-security/2022/01/24/2
Source: secalert@redhat.com
Resource:
Exploit
Mailing List
Patch
Third Party Advisory

Change History

0
Information is not available yet

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