CVE-2017-13673

QEMU: VGA: reachable assert failure during display update

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen mode is used causing a denial of service (assertion failure) in the cpu_physical_memory_snapshot_get_dirty function.

La actualización de la pantalla VGA en la región calculada inapropiadamente para la instantánea dirty bitmap en el caso de que el modo pantalla dividida sea usado, lo que provoca una denegación de servicio (fallo de aserción) en la función cpu_physical_memory_snapshot_get_dirty.

An assert failure issue was found in the VGA display emulator built into the Quick emulator (QEMU). It could occur while updating graphics display, due to miscalculating region for dirty bitmap snapshot in split screen mode. A privileged user/process inside guest could use this flaw to crash the QEMU process on the host resulting in denial of service.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

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

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-08-24 CVE Reserved
2017-08-29 CVE Published
2023-05-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-617: Reachable Assertion

CAPEC

References (9)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2017/09/10/1	Mailing List
http://www.securityfocus.com/bid/100527	Third Party Advisory
https://git.qemu.org/gitweb.cgi?p=qemu.git%3Ba=commit%3Bh=bfc56535f793c557aa754c50213fc5f882e6482d	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg04685.html	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html	2023-11-07
https://access.redhat.com/errata/RHSA-2018:1104	2023-11-07
https://access.redhat.com/errata/RHSA-2018:1113	2023-11-07
https://access.redhat.com/security/cve/CVE-2017-13673	2018-04-11
https://bugzilla.redhat.com/show_bug.cgi?id=1486588	2018-04-11

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"				2.9.0 Search vendor "Qemu" for product "Qemu" and version "2.9.0"		-		Affected