CVE-2015-6855

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash.

hw/ide/core.c en QEMU no restringe adecuadamente los comandos aceptados por un dispositivo ATAPI, lo que permite a usuarios invitados provocar una denegación de servicio o posiblemente tener otro impacto no especificado a través de ciertos comandos IDE, según lo demostrado por un comando WIN_READ_NATIVE_MAX en un controlador vacío, lo cual desencadena un error de división por cero y una cáida de la instancia.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

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

2015-09-10 CVE Reserved
2015-09-21 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-369: Divide By Zero

CAPEC

References (16)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2015/09/10/1	Mailing List
http://www.openwall.com/lists/oss-security/2015/09/10/2	Mailing List
http://www.securityfocus.com/bid/76691	Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html	Mailing List
https://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.html	2021-12-15
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html	2021-12-15
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html	2021-12-15
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html	2021-12-15
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html	2021-12-15
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html	2021-12-15
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html	2021-12-15
http://www.debian.org/security/2015/dsa-3361	2021-12-15
http://www.debian.org/security/2015/dsa-3362	2021-12-15
http://www.ubuntu.com/usn/USN-2745-1	2021-12-15
https://security.gentoo.org/glsa/201602-01	2021-12-15

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"				<= 2.4.1 Search vendor "Qemu" for product "Qemu" and version " <= 2.4.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		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
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				21 Search vendor "Fedoraproject" for product "Fedora" and version "21"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				22 Search vendor "Fedoraproject" for product "Fedora" and version "22"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				23 Search vendor "Fedoraproject" for product "Fedora" and version "23"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Desktop Search vendor "Suse" for product "Linux Enterprise Desktop"				12 Search vendor "Suse" for product "Linux Enterprise Desktop" and version "12"		-		Affected
Suse Search vendor "Suse"		Linux Enterprise Server Search vendor "Suse" for product "Linux Enterprise Server"				12 Search vendor "Suse" for product "Linux Enterprise Server" and version "12"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				15.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.04"		-		Affected
Arista Search vendor "Arista"		Eos Search vendor "Arista" for product "Eos"				-		-		Affected