CVE-2015-5158

Ubuntu Security Notice USN-2692-1

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Stack-based buffer overflow in hw/scsi/scsi-bus.c in QEMU, when built with SCSI-device emulation support, allows guest OS users with CAP_SYS_RAWIO permissions to cause a denial of service (instance crash) via an invalid opcode in a SCSI command descriptor block.

Desbordamiento de buffer basado en pila en hw/scsi/scsi-bus.c en QEMU, cuando se construye con soporte de emulación SCSI-device, permite a usuarios del SO invitado con permisos CAP_SYS_RAWIO provocar una denegación de servicio (caída de instancia) a través de un opcode no válido opcode en un bloque descriptor de comandos SCSI.

Matt Tait discovered that QEMU incorrectly handled PIT emulation. In a non-default configuration, a malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. Kevin Wolf discovered that QEMU incorrectly handled processing ATAPI commands. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-07-01 CVE Reserved
2015-07-29 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (4)

URL	Tag	Source
http://www.securityfocus.com/bid/76016	Third Party Advisory
http://www.securitytracker.com/id/1033095	Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2015-07/msg04558.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/201510-02	2020-09-08

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"				>= 2.2.0 < 2.4.0 Search vendor "Qemu" for product "Qemu" and version " >= 2.2.0 < 2.4.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				2.4.0 Search vendor "Qemu" for product "Qemu" and version "2.4.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				2.4.0 Search vendor "Qemu" for product "Qemu" and version "2.4.0"		rc1		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				2.4.0 Search vendor "Qemu" for product "Qemu" and version "2.4.0"		rc2		Affected