#VU37242 Out-of-bounds write in Google Android - CVE-2017-13252

Vulnerability identifier: #VU37242

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-2017-13252

CWE-ID: CWE-787

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.

In CryptoHal::decrypt of CryptoHal.cpp, there is an out of bounds write due to improper input validation that results in a read from uninitialized memory. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android. Versions: 8.0, 8.1. Android ID: A-70526702.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Google Android: 8.0 - 8.1

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External links
https://www.securityfocus.com/bid/103255
https://source.android.com/security/bulletin/2018-03-01

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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.