Microsoft update for Flash Player

Published: 2018-12-06

Severity	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 Subscribe	Adobe Flash Player Client/Desktop applications / Plugins for browsers, ActiveX components
Vendor	Microsoft

Security Advisory

1) Use-after-free

Severity: Critical

CVSSv3: 8.4 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-15982

CWE-ID: CWE-416 - Use After Free

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: on Windows 8.1 for 32-bit systems, on Windows 8.1 for x64-based systems, on Windows 10 for 32-bit Systems, on Windows 10 for x64-based Systems, on Windows 10 Version 1607 for 32-bit Systems, on Windows 10 Version 1607 for x64-based Systems, on Windows 10 Version 1703 for 32-bit Systems, on Windows 10 Version 1703 for x64-based Systems, on Windows 10 Version 1709 for 32-bit Systems, on Windows 10 Version 1709 for 64-based Systems, on Windows 10 Version 1709 for ARM64-based Systems, on Windows 10 Version 1803 for 32-bit Systems, on Windows 10 Version 1803 for ARM64-based Systems, on Windows 10 Version 1809 for 32-bit Systems, on Windows 10 Version 1809 for ARM64-based Systems, on Windows 10 Version 1809 for x64-based Systems, on Windows RT 8.1, on Windows Server 2012, on Windows Server 2012 R2, on Windows Server 2016, on Windows Server 2019

CPE

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

Severity: High

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-15983

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