#VU40185 Input validation error in Google Android - CVE-2016-3757

Vulnerability identifier: #VU40185

Vulnerability risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-3757

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Google Android
Operating systems & Components / Operating system

Vendor: Google

Description

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

The print_maps function in toolbox/lsof.c in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-07-01 allows user-assisted attackers to gain privileges via a crafted application that attempts to list a long name of a memory-mapped file, aka internal bug 28175237. NOTE: print_maps is not related to the Vic Abell lsof product.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Google Android: 4.0 - 4.4.3, 5.0 - 5.1.0, 6.0 - 6.0.1

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External links
https://source.android.com/security/bulletin/2016-07-01.html
https://android.googlesource.com/platform/system/core/+/ae18eb014609948a40e22192b87b10efc680daa7

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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.