openEuler update for bluez

1) Double Free

EUVDB-ID: #VU48203

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27153

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker can cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

bluez-help: before 5.54-4

bluez-debugsource: before 5.54-4

bluez-libs: before 5.54-4

bluez-debuginfo: before 5.54-4

bluez-devel: before 5.54-4

bluez-cups: before 5.54-4

bluez: before 5.54-4

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1307

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.