Double Free in Google, Google Android

1) Double Free

EUVDB-ID: #VU36095

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1999

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

In binder_alloc_free_page of binder_alloc.c, there is a possible double free due to improper locking. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-120025196.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Android: All versions

CPE2.3

External links

http://www.securityfocus.com/bid/106851
http://seclists.org/bugtraq/2019/Aug/13
http://source.android.com/security/bulletin/2019-02-01
http://usn.ubuntu.com/3979-1/
http://www.debian.org/security/2019/dsa-4495
http://www.exploit-db.com/exploits/46357/

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.