CVE-2017-13711

QEMU: Slirp: use-after-free when sending response

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.

Una vulnerabilidad de uso después de liberación de memoria (use-after-free) en la función sofree en slirp/socket.c en QEMU (también conocido como Quick Emulator) permite que atacantes remotos provoquen una denegación de servicio (bloqueo de la instancia QEMU) aprovechando el error a la hora de eliminar correctamente ifq_so de los paquetes pendientes.

A use-after-free issue was found in the Slirp networking implementation of the Quick emulator (QEMU). It occurs when a Socket referenced from multiple packets is freed while responding to a message. A user/process 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

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-08-28 CVE Reserved
2017-09-01 CVE Published
2024-06-22 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/100534	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2017/08/29/6	2020-10-29
https://bugzilla.redhat.com/show_bug.cgi?id=1486400	2018-04-11
https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg05201.html	2020-10-29

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3991	2020-10-29
https://access.redhat.com/errata/RHSA-2018:0816	2020-10-29
https://access.redhat.com/errata/RHSA-2018:1104	2020-10-29
https://access.redhat.com/errata/RHSA-2018:1113	2020-10-29
https://access.redhat.com/security/cve/CVE-2017-13711	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"				<= 2.10.1 Search vendor "Qemu" for product "Qemu" and version " <= 2.10.1"		-		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