CVE-2021-3998
Detail
Modified This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
References to Advisories, Solutions, and Tools
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URL
Source(s)
Tag(s)
https://access.redhat.com/security/cve/CVE-2021-3998
CVE, Inc., Red Hat
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024633
CVE, Inc., Red Hat
Issue Tracking
Patch
Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-3998
CVE, Inc., Red Hat
Third Party Advisory
https://security.netapp.com/advisory/ntap-20221020-0003/
CVE, Inc., Red Hat
Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=28770
CVE, Inc., Red Hat
Issue Tracking
Patch
Third Party Advisory
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=84d2d0fe20bdf94feed82b21b4d7d136db471f03
CVE, Inc., Red Hat
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=ee8d5e33adb284601c00c94687bc907e10aec9bb
CVE, Inc., Red Hat
https://www.openwall.com/lists/oss-security/2022/01/24/4
CVE, Inc., Red Hat
Mailing List
Patch
Third Party Advisory
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-252
Unchecked Return Value
NIST
CWE-125
Out-of-bounds Read
Red Hat, Inc.
Change History
8 change records found show changes
CVE Modified by CISA-ADP 6/09/2025 11:15:26 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVE Modified by CVE 11/21/2024 1:23:20 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/security/cve/CVE-2021-3998
Added
Reference
https://bugzilla.redhat.com/show_bug.cgi?id=2024633
Added
Reference
https://security-tracker.debian.org/tracker/CVE-2021-3998
Added
Reference
https://security.netapp.com/advisory/ntap-20221020-0003/
Added
Reference
https://sourceware.org/bugzilla/show_bug.cgi?id=28770
Added
Reference
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=84d2d0fe20bdf94feed82b21b4d7d136db471f03
Added
Reference
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=ee8d5e33adb284601c00c94687bc907e10aec9bb
Added
Reference
https://www.openwall.com/lists/oss-security/2022/01/24/4
CVE Modified by Red Hat, Inc. 5/14/2024 5:26:15 AM
Action
Type
Old Value
New Value
CVE Modified by Red Hat, Inc. 2/12/2023 6:43:11 PM
Action
Type
Old Value
New Value
Added
Reference
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=84d2d0fe20bdf94feed82b21b4d7d136db471f03 [No Types Assigned]
Added
Reference
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=ee8d5e33adb284601c00c94687bc907e10aec9bb [No Types Assigned]
Removed
Reference
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84d2d0fe20bdf94feed82b21b4d7d136db471f03 [Mailing List, Patch, Third Party Advisory]
Removed
Reference
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ee8d5e33adb284601c00c94687bc907e10aec9bb [Mailing List, Patch, Third Party Advisory]
Modified Analysis by NIST 11/07/2022 9:25:42 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
AND
OR
*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
Changed
Reference Type
https://security.netapp.com/advisory/ntap-20221020-0003/ No Types Assigned
https://security.netapp.com/advisory/ntap-20221020-0003/ Third Party Advisory
CVE Modified by Red Hat, Inc. 10/20/2022 6:15:10 PM
Action
Type
Old Value
New Value
Added
Reference
https://security.netapp.com/advisory/ntap-20221020-0003/ [No Types Assigned]
Reanalysis by NIST 9/02/2022 12:14:42 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from (including) 2.33
OR
*cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from (including) 2.33 up to (excluding) 2.35
Initial Analysis by NIST 8/29/2022 11:23:11 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Added
CWE
NIST CWE-252
Added
CPE Configuration
OR
*cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from (including) 2.33
Changed
Reference Type
https://access.redhat.com/security/cve/CVE-2021-3998 No Types Assigned
https://access.redhat.com/security/cve/CVE-2021-3998 Third Party Advisory
Changed
Reference Type
https://bugzilla.redhat.com/show_bug.cgi?id=2024633 No Types Assigned
https://bugzilla.redhat.com/show_bug.cgi?id=2024633 Issue Tracking, Patch, Third Party Advisory
Changed
Reference Type
https://security-tracker.debian.org/tracker/CVE-2021-3998 No Types Assigned
https://security-tracker.debian.org/tracker/CVE-2021-3998 Third Party Advisory
Changed
Reference Type
https://sourceware.org/bugzilla/show_bug.cgi?id=28770 No Types Assigned
https://sourceware.org/bugzilla/show_bug.cgi?id=28770 Issue Tracking, Patch, Third Party Advisory
Changed
Reference Type
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84d2d0fe20bdf94feed82b21b4d7d136db471f03 No Types Assigned
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84d2d0fe20bdf94feed82b21b4d7d136db471f03 Mailing List, Patch, Third Party Advisory
Changed
Reference Type
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ee8d5e33adb284601c00c94687bc907e10aec9bb No Types Assigned
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ee8d5e33adb284601c00c94687bc907e10aec9bb Mailing List, Patch, Third Party Advisory
Changed
Reference Type
https://www.openwall.com/lists/oss-security/2022/01/24/4 No Types Assigned
https://www.openwall.com/lists/oss-security/2022/01/24/4 Mailing List, Patch, Third Party Advisory
Quick Info
CVE Dictionary Entry: CVE-2021-3998 NVD
Published Date: 08/24/2022 NVD
Last Modified: 06/09/2025
Source: Red Hat, Inc.
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