Security restrictins bypass in Google Android

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU41012

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2014-7911

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

luni/src/main/java/java/io/ObjectInputStream.java in the java.io.ObjectInputStream implementation in Android before 5.0.0 does not verify that deserialization will result in an object that met the requirements for serialization, which allows attackers to execute arbitrary code via a crafted finalize method for a serialized object in an ArrayMap Parcel within an intent sent to system_service, as demonstrated by the finalize method of android.os.BinderProxy, aka Bug 15874291.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Android: 1.0 - 4.4.3

CPE2.3

• cpe:2.3:o:google:android:1.6:*:*:*:*:*:*:*
• cpe:2.3:o:google:android:2.3.7:*:*:*:*:*:*:*
• cpe:2.3:o:google:android:3.2.6:*:*:*:*:*:*:*
• cpe:2.3:o:google:android:4.4.3:*:*:*:*:*:*:*

External links

http://seclists.org/fulldisclosure/2014/Nov/51
http://android.googlesource.com/platform/libcore/+/738c833d38d41f8f76eb7e77ab39add82b1ae1e2

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.