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High severity · published Aug 24, 2022
CVE-2021-3998
A flaw was found in glibc
7.5
CVSS
2.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GL
glibc ·
Affects glibc v2.33 and above. · source: vendor, NVD
HF
H300s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410c Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H700s Firmware · Netapp
All versions, or not specified · source: NVD
OS
Ontap Select Deploy Administration Utility · Netapp
All versions, or not specified · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
Affected product
GL
glibc
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3998
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3998
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-3998
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2024633
Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-3998
Third Party Advisory
https://security.netapp.com/advisory/ntap-20221020-0003/
Issue Tracking
https://sourceware.org/bugzilla/show_bug.cgi?id=28770
sourceware.org
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=84d2d0fe20bdf94feed82b21b4d7d136db471f03
More from glibc
7.8
CVE-2021-3999
A flaw was found in glibc