CVE-2020-27153

bluez: double free in gatttool client disconnect callback handler in src/shared/att.c could lead to DoS or RCE

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.

En BlueZ versiones anteriores a 5.55, se encontró una doble liberación en la rutina disconnect_cb() de gatttool del archivo shared/att.c. Un atacante remoto podría potencialmente causar una denegación de servicio o una ejecución de código, durante la detección del servicio, debido a un evento MGMT de desconexión redundante

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-15 CVE Reserved
2020-10-15 CVE Published
2024-08-04 CVE Updated
2024-08-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-415: Double Free
CWE-416: Use After Free

CAPEC

References (9)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a	2022-04-05
https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07	2022-04-05

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html	2022-04-05
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html	2022-04-05
https://bugzilla.redhat.com/show_bug.cgi?id=1884817	2021-05-18
https://security.gentoo.org/glsa/202011-01	2022-04-05
https://www.debian.org/security/2021/dsa-4951	2022-04-05
https://access.redhat.com/security/cve/CVE-2020-27153	2021-05-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Bluez Search vendor "Bluez"		Bluez Search vendor "Bluez" for product "Bluez"				< 5.55 Search vendor "Bluez" for product "Bluez" and version " < 5.55"		-		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
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.2 Search vendor "Opensuse" for product "Leap" and version "15.2"		-		Affected