“Use-after-free” error in Adobe products - CVE-2016-6921

Vulnerability identifier: #VU4777

CSH Severity: High

CVSS v4: 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]

CVE-ID: CVE-2016-6921

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The weakness exists due to use-after-free when handling a malicious Flash content. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code witj privileges of the current user.

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

Adobe Flash Player
Adobe Flash Player for Linux
Adobe Flash Player Extended Support Release
Arch Linux
Microsoft Windows
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Windows Server

Update Flash Player Desktop Runtime to 23.0.0.162 for Windows, Macintosh and ChromeOS.
Update Flash Player Extended Support Relaese to 18.0.0.375 for Windows and Macintosh.
Update Flash Player to 11.2.202.635 for Linux.

• https://helpx.adobe.com/security/products/flash-player/apsb16-29.html

• Microsoft Security Update for Adobe Flash Player
• Security Update for Adobe Flash Player
• Arch Linux update for lib32-flashplugin
• Arch Linux update for flashplugin
• SUSE Linux update for flash-player
• openSUSE update for flash-player
• Red Hat update for flash-plugin
• “Use-after-free” error in Adobe Flash Player