#VU40229 Permissions, Privileges, and Access Controls in Google Android - CVE-2016-2494

Vulnerability identifier: #VU40229

Vulnerability risk: High

CVSSv4.0: 7.3 [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:P/U:Amber]

CVE-ID: CVE-2016-2494

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Google

Description

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

Off-by-one error in sdcard/sdcard.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 2016-06-01 allows attackers to gain privileges via a crafted application, as demonstrated by obtaining Signature or SignatureOrSystem access, aka internal bug 28085658.

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://packetstormsecurity.com/files/137404/Android-system-bin-sdcard-Stack-Buffer-Overflow.html
https://source.android.com/security/bulletin/2016-06-01.html
https://android.googlesource.com/platform/system/core/+/864e2e22fcd0cba3f5e67680ccabd0302dfda45d
https://www.exploit-db.com/exploits/39921/

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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. However, proof of concept for this vulnerability is available.