// For flags

CVE-2016-1714

Qemu: nvram: OOB r/w access in processing firmware configurations

Severity Score

8.1
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The (1) fw_cfg_write and (2) fw_cfg_read functions in hw/nvram/fw_cfg.c in QEMU before 2.4, when built with the Firmware Configuration device emulation support, allow guest OS users with the CAP_SYS_RAWIO privilege to cause a denial of service (out-of-bounds read or write access and process crash) or possibly execute arbitrary code via an invalid current entry value in a firmware configuration.

Las funciones (1) fw_cfg_write y (2) fw_cfg_read en hw/nvram/fw_cfg.c en QEMU en versiones anteriores a 2.4, cuando construye con el soporte de emulación de dispositivo de Firmware Configuration, permiten a usuarios del SO invitado con el privilegio CAP_SYS_RAWIO provocar una denegación de servicio (acceso a lectura o escritura fuera de rango y caída del proceso) o potencialmente ejecutar código arbitrario a través de un valor de entrada actual no válido en una configuración de firmware.

An out-of-bounds read/write flaw was discovered in the way QEMU's Firmware Configuration device emulation processed certain firmware configurations. A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the QEMU process instance or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
Attack Vector
Adjacent
Attack Complexity
Medium
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-01-12 CVE Reserved
  • 2016-01-28 CVE Published
  • 2024-07-08 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-125: Out-of-bounds Read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
 Openstack
Search vendor "Redhat" for product "Openstack"
 5.0
Search vendor "Redhat" for product "Openstack" and version "5.0"
-
Affected
Oracle
Search vendor "Oracle"
 Linux
Search vendor "Oracle" for product "Linux"
 6
Search vendor "Oracle" for product "Linux" and version "6"
-
Affected
Oracle
Search vendor "Oracle"
 Linux
Search vendor "Oracle" for product "Linux"
 7
Search vendor "Oracle" for product "Linux" and version "7"
-
Affected
Qemu
Search vendor "Qemu"
 Qemu
Search vendor "Qemu" for product "Qemu"
 <= 2.3.0
Search vendor "Qemu" for product "Qemu" and version " <= 2.3.0"
-
Affected