#VU4749 Security bypass


Published: 2017-01-16 | Updated: 2017-03-24

Vulnerability identifier: #VU4749

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-7372

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

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

Vendor: Google, Inc.

Description
The vulnerability allows a renote attacker to bypass security restriction on the target system.

The weakness is due to the use of an incorrect offset value by the engineNextBytes function in Apache Harmony, as used in the Java Cryptography Architecture (JCA) in Android . A remote attacker can leverage the resulting PRNG predictability, defeat cryptographic protection mechanisms and launch further attacks on the system.

Successful exploitation of the vulnerablity results in security bypass on the vulnerable system.

Mitigation
Update to version 4.4.

Vulnerable software versions

Google Android: 4.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.1, 4.1.2, 4.2, 4.2.1, 4.2.2, 4.3, 4.3.1

CPE

External links
https://android-developers.googleblog.com/2013/08/some-securerandom-thoughts.html


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.


Latest bulletins with this vulnerability