// For flags

CVE-2021-4090

 

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.

Se encontró un fallo de escritura en memoria fuera de límites (OOB) en el NFSD del kernel de Linux. Una falta de saneo puede conllevar a una escritura más allá de bmval[bmlen-1] en nfsd4_decode_bitmap4 en el archivo fs/nfsd/nfs4xdr.c. En este fallo, un atacante local con privilegio de usuario puede conseguir acceso a memoria fuera de límites, conllevando a una amenaza para la integridad y confidencialidad del sistema

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-12-10 CVE Reserved
  • 2022-01-11 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Netapp
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H300s Firmware
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--
Affected
in Netapp
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H300s
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--
Safe
Netapp
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H500s Firmware
Search vendor "Netapp" for product "H500s Firmware"
--
Affected
in Netapp
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H500s
Search vendor "Netapp" for product "H500s"
--
Safe
Netapp
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H700s Firmware
Search vendor "Netapp" for product "H700s Firmware"
--
Affected
in Netapp
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H700s
Search vendor "Netapp" for product "H700s"
--
Safe
Netapp
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H300e Firmware
Search vendor "Netapp" for product "H300e Firmware"
--
Affected
in Netapp
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H300e
Search vendor "Netapp" for product "H300e"
--
Safe
Netapp
Search vendor "Netapp"
H500e Firmware
Search vendor "Netapp" for product "H500e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H500e
Search vendor "Netapp" for product "H500e"
--
Safe
Netapp
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H700e Firmware
Search vendor "Netapp" for product "H700e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H700e
Search vendor "Netapp" for product "H700e"
--
Safe
Netapp
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H410s Firmware
Search vendor "Netapp" for product "H410s Firmware"
--
Affected
in Netapp
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H410s
Search vendor "Netapp" for product "H410s"
--
Safe
Netapp
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H410c Firmware
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--
Affected
in Netapp
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H410c
Search vendor "Netapp" for product "H410c"
--
Safe
Linux
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Linux Kernel
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< 5.16
Search vendor "Linux" for product "Linux Kernel" and version " < 5.16"
-
Affected
Linux
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Linux Kernel
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5.16
Search vendor "Linux" for product "Linux Kernel" and version "5.16"
-
Affected
Linux
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Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
5.16
Search vendor "Linux" for product "Linux Kernel" and version "5.16"
rc1
Affected