Zero-day vulnerability in Adobe Flash Player

Use-after-free error
CVE-2016-0984

According to Kaspersky Lab, this vulnerability has being exploited in the wild by BlackOasis actor in June 2015.

Vulnerability details

Advisory: SB2016020902 - Multiple vulnerabilities in Adobe Flash Player

Vulnerable component: Adobe Flash Player

CVE-ID: CVE-2016-0984

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-416 - Use After Free

Description:

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a use-after-free error when processing malicious .swf content. A remote attacker can create a specially crafted .SWF file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in complete compromise of vulnerable system.

According to Kasperksy Lab report, this vulnerability has bein actively exploited in the wild by BlackOasis APT actor.

Public Exploits:

- Adobe Flash - Sound.loadPCMFromByteArray Dangling Pointer [Exploit-DB]

External links:

https://securelist.com/apt-trends-report-q2-2017/79332/

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.