Microsoft update for Flash Player

Published: 2018-12-06

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-15982 CVE-2018-15983
CWE-ID	CWE-416 CWE-427
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild.
Vulnerable software	Adobe Flash Player for Microsoft Windows Client/Desktop applications / Plugins for browsers, ActiveX components
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU16279

Risk: Critical

CVSSv4.0: 8.6 [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:A/U:Red]

CVE-ID: CVE-2018-15982

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing SWF files. A remote attacker can create a specially crafted .swf file, trick the victim to open it and execute arbitrary code on system with privileges of the current user.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note: this vulnerability is being exploited in the wild.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Adobe Flash Player for Microsoft Windows: on Windows RT 8.1 - on Windows 10 Version 1809 for 32-bit Systems

CPE2.3

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV180031

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?

Yes. This vulnerability is being exploited in the wild.

2) Insecure DLL loading

EUVDB-ID: #VU16280

Risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-15983

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No