#VU83410 Double Free in PulseAudio - CVE-2020-15710

Vulnerability identifier: #VU83410

Vulnerability 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

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
PulseAudio
Other software / Other software solutions

Vendor: Freedesktop.org

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
Install updates from vendor's website.

Vulnerable software versions

PulseAudio: before 9.99.1

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External links
https://launchpad.net/bugs/1884738
https://github.com/pulseaudio/pulseaudio/commit/4231befa7787dbbfdd24e7f9bb248a18cbeab7a0

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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.