CVE-2017-11334

Qemu: exec: oob access during dma operation

Severity Score

4.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area.

La función address_space_write_continue en exec.c en QEMU (también conocido como Quick Emulator) permite a los usuarios invitado locales con privilegios del sistema operativo provocar una denegación de servicio (acceso fuera de los límites y detención de las instancias de la cuenta de invitado) usando qemu_map_ram_ptr para acceder al área del bloque de memoria ram del invitado.

Quick Emulator (QEMU), compiled with qemu_map_ram_ptr to access guests' RAM block area, is vulnerable to an OOB r/w access issue. The crash can occur if a privileged user inside a guest conducts certain DMA operations, resulting in a DoS.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-07-14 CVE Reserved
2017-08-02 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read
CWE-787: Out-of-bounds Write

CAPEC

References (14)

URL	Tag	Source
http://www.securityfocus.com/bid/99895	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2017/07/17/4	2020-11-10
https://bugzilla.redhat.com/show_bug.cgi?id=1471638	2017-12-14
https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg03775.html	2020-11-10

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3925	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3369	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3466	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3470	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3471	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3472	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3473	2020-11-10
https://access.redhat.com/errata/RHSA-2017:3474	2020-11-10
https://usn.ubuntu.com/3575-1	2020-11-10
https://access.redhat.com/security/cve/CVE-2017-11334	2017-12-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				<= 2.9.1 Search vendor "Qemu" for product "Qemu" and version " <= 2.9.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected