Ubuntu update for pulseaudio

1) Double Free

EUVDB-ID: #VU83410

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-15710

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the src/modules/bluetooth/module-bluez5-device.c and src/modules/bluetooth/module-bluez5-device.c files of the Bluez 5 module. A local user can trigger a double free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package pulseaudio to the latest version.

Vulnerable software versions

Ubuntu: 16.04

pulseaudio-utils (Ubuntu package): before 1:8.0-0ubuntu3.14

pulseaudio-module-bluetooth (Ubuntu package): before 1:8.0-0ubuntu3.14

pulseaudio (Ubuntu package): before 1:8.0-0ubuntu3.14

libpulse0 (Ubuntu package): before 1:8.0-0ubuntu3.14

libpulse-mainloop-glib0 (Ubuntu package): before 1:8.0-0ubuntu3.14

CPE2.3

• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:a:canonical:pulseaudio-utils_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:pulseaudio-module-bluetooth_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:pulseaudio_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:libpulse0_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:libpulse-mainloop-glib0_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-4519-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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