CVE-2016-9845

Ubuntu Security Notice USN-3261-1

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

QEMU (aka Quick Emulator) built with the Virtio GPU Device emulator support is vulnerable to an information leakage issue. It could occur while processing 'VIRTIO_GPU_CMD_GET_CAPSET_INFO' command. A guest user/process could use this flaw to leak contents of the host memory bytes.

QEMU (vulnerabilidad también conocido como Quick Emulator) construida con el soporte de emulador Virtio GPU Device es vulnerable a un problema de fuga de información. Podría ocurrir mientras se procesa el comando 'VIRTIO_GPU_CMD_GET_CAPSET_INFO'. Un usuario/proceso invitado podría usar esta falla para filtrar contenidos de los bytes de memoria del host.

Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. Li Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-12-05 CVE Reserved
2016-12-29 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (5)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2016/12/05/15	Mailing List
http://www.openwall.com/lists/oss-security/2016/12/05/22	Mailing List
http://www.securityfocus.com/bid/94763	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://lists.nongnu.org/archive/html/qemu-devel/2016-11/msg00019.html	2020-11-10

URL	Date	SRC
https://security.gentoo.org/glsa/201701-49	2020-11-10

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"				< 2.8.0 Search vendor "Qemu" for product "Qemu" and version " < 2.8.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				2.8.0 Search vendor "Qemu" for product "Qemu" and version "2.8.0"		rc0		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				2.8.0 Search vendor "Qemu" for product "Qemu" and version "2.8.0"		rc1		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				2.8.0 Search vendor "Qemu" for product "Qemu" and version "2.8.0"		rc2		Affected