#VU40191 Input validation error in Google Android - CVE-2016-3751

Vulnerability identifier: #VU40191

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-3751

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Google

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Unspecified vulnerability in libpng before 1.6.20, as used 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 attackers to gain privileges via a crafted application, as demonstrated by obtaining Signature or SignatureOrSystem access, aka internal bug 23265085.

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://www.openwall.com/lists/oss-security/2016/07/09/4
https://android.googlesource.com/platform/external/libpng/+/9d4853418ab2f754c2b63e091c29c5529b8b86ca

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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