#VU10355 Use-after-free in Adobe Flash Player - CVE-2018-4878

Vulnerability identifier: #VU10355

Vulnerability 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-2018-4878

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Adobe Flash Player
Client/Desktop applications / Plugins for browsers, ActiveX components

Vendor: Adobe

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 .swf files. A remote attacker can execute arbitrary code on the target system.

Note: this vulnerability is being actively exploited in the wild against the latest version of Adobe Flash Player.

UPDATE: The vendor has issued the fixed version on February 6, 2018.

Mitigation
Update to version 28.0.0.161.

Vulnerable software versions

Adobe Flash Player: 25.0.0.148 - 28.0.0.137

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External links
https://helpx.adobe.com/security/products/flash-player/apsa18-01.html
https://helpx.adobe.com/security/products/flash-player/apsb18-03.html

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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.