CVE-2020-15710 - Double Free

Severity

61%

Complexity

18%

Confidentiality

70%

Potential double free in Bluez 5 module of PulseAudio could allow a local attacker to leak memory or crash the program. The modargs variable may be freed twice in the fail condition in src/modules/bluetooth/module-bluez5-device.c and src/modules/bluetooth/module-bluez5-device.c. Fixed in 1:8.0-0ubuntu3.14.

CVSS 3.1 Base Score 6.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H).

CVSS 2.0 Base Score 3.6. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:P).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

First reported 4 years ago

2020-11-19 03:15:00

Last updated 4 years ago

2020-12-16 15:08:00

Affected Software

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

References

https://launchpad.net/bugs/1884738

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

https://launchpad.net/bugs/1884738

Third Party Advisory

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

Third Party Advisory

https://launchpad.net/bugs/1884738

Issue Tracking, Third Party Advisory

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