Zero-day vulnerability in Adobe Flash Player

Type confusion
CVE-2013-5331

The vulnerability was reported by Adobe as being exploited in the wild. The attackers used Microsoft Word documents with embedded malicious Flash (.swf) content.

Known malware:

Troj/SWFExp-CH (Sophos)
Trojan horse Exploit_c.YZX (AVG)
Exploit.Win32.CVE-2013 (Ikarus)
HEUR:Exploit.SWF.CVE-2013-5331.a (Kaspersky)
Exploit:Win32/CVE-2013-5331 (Microsoft)
SWF/Exploit.CVE-2013-5331.A trojan (Eset)
Trojan.Mdropper (Symantec)

Vulnerability details

Advisory: SB2013121005 - Two remote code execution vulnerabilities in Adobe Flash Player

Vulnerable component: Adobe Flash Player

CVE-ID: CVE-2013-5331

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-843 - Type confusion

Description:

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

The weakness exists due to type confusion error. A remote attacker can create a specially crafted Web site or . swf file, trick the victim into visiting it and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits:

- Adobe Flash Player - Type Confusion Remote Code Execution (Metasploit) [Exploit-DB]

External links:

https://helpx.adobe.com/security/products/flash-player/apsb13-28.html
https://www.symantec.com/security_response/attacksignatures/detail.jsp?asid=27558
http://eromang.zataz.com/2015/12/24/cve-2013-5331-adobe-flash-player-type-confusion-remote-code-exec...
http://blog.malwaretracker.com/2014/01/cve-2013-5331-evaded-av-by-using.html
http://eromang.zataz.com/2015/12/24/cve-2013-5331-adobe-flash-player-type-confusion-remote-code-exec...
http://freerepairwindowserrors.com/spytips/Guide-to-Remove-SWFExploit.CVE-2013-5331.A_16_203811.html

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.