CVE-2021-4154
kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.
Se encontró un defecto de uso de memoria previamente liberada en la función cgroup1_parse_param en el archivo kernel/cgroup/cgroup-v1.c en el analizador cgroup v1 del kernel de Linux. Un atacante local con un privilegio de usuario podría causar una escalada de privilegios al explotar el parámetro de syscall fsconfig, conllevando a una ruptura del contenedor y una denegación de servicio en el sistema
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-12-22 CVE Reserved
- 2022-01-20 CVE Published
- 2022-10-07 First Exploit
- 2023-03-08 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://cloud.google.com/anthos/clusters/docs/security-bulletins#gcp-2022-002 | Third Party Advisory | |
| https://security.netapp.com/advisory/ntap-20220225-0004 | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://github.com/Markakd/CVE-2021-4154 | 2022-10-07 | |
| https://github.com/veritas501/CVE-2021-4154 | 2023-03-02 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-4154 | 2022-03-14 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 5.4.134 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 5.4.134" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.10.52 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.52" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.12.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.12.19" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 5.13.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.13.4" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.14 Search vendor "Linux" for product "Linux Kernel" and version "5.14" | rc1 |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Virtualization Search vendor "Redhat" for product "Virtualization" | 4.0 Search vendor "Redhat" for product "Virtualization" and version "4.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h300e Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h300e" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h300s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h300s" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h410s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410s" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h500e Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h500e" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h500s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h500s" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h700e Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h700e" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h700s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h700s" | - |
Affected
| ||||||