CVE-2020-27153 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html https://bugzilla.redhat.com/show_bug.cgi?id=1884817 https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07 https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html https://security.gentoo.org/glsa/202011-01

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

HIGH

Base Severity

8.6