CVE-2018-12904
KVM (Nested Virtualization) - L1 Guest Privilege Escalation
Severity Score
4.9
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.
En arch/x86/kvm/vmx.c en el kernel de Linux en versiones anteriores a la 4.17.2, cuando se emplea la virtualización anidada, los atacantes locales podrían hacer que los invitados L1 KVM realizasen un VMEXIT, permitiendo escalados de privilegios y ataques de denegación de servicio (DoS) debido a la falta de comprobación de CPL.
*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
- 2018-06-27 CVE Reserved
- 2018-06-27 CVE Published
- 2023-11-18 EPSS Updated
- 2024-08-05 CVE Updated
- 2024-08-05 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.exploit-db.com/exploits/44944 | 2024-08-05 | |
| https://bugs.chromium.org/p/project-zero/issues/detail?id=1589 | 2024-08-05 |
| URL | Date | SRC |
|---|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2 | 2019-10-03 | |
| https://usn.ubuntu.com/3752-1 | 2019-10-03 | |
| https://usn.ubuntu.com/3752-2 | 2019-10-03 | |
| https://usn.ubuntu.com/3752-3 | 2019-10-03 |
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" | < 4.17.2 Search vendor "Linux" for product "Linux Kernel" and version " < 4.17.2" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||