CVE-2016-4231

published 2016-07-13

CVE-2016-4231: Use-after-free vulnerability in Adobe Flash Player before 18.0.0.366 and 19.x through 22.x before 22.0.0.209 on Windows and OS X and before 11.2.202.632 on…

Priority P2 71 high 8.8 CVSS 3.1

AV N AC L PR N UI R S U C H I H A H

EXPLOIT

Use-after-free vulnerability in Adobe Flash Player before 18.0.0.366 and 19.x through 22.x before 22.0.0.209 on Windows and OS X and before 11.2.202.632 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-4173, CVE-2016-4174, CVE-2016-4222, CVE-2016-4226, CVE-2016-4227, CVE-2016-4228, CVE-2016-4229, CVE-2016-4230, and CVE-2016-4248.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
adobe	flash_player	<= 18.0.0.360	—
adobe	flash_player	<= 22.0.0.192	—
adobe	flash_player	<= 11.2.202.626	—
adobe	flash_player_desktop_runtime	<= 22.0.0.192	—

Detection & IOCs extracted from sources · hover to see the quote

url https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/40356.zip↗

• → Detect ActionScript 2 use-after-free exploit pattern: addProperty() used to register a getter with the same name as a method on a MovieClip, followed by invocation of that method — the getter frees the MovieClip mid-call via removeMovieClip() ↗
• → Look for SWF files containing the ActionScript sequence: createEmptyMovieClip → addProperty (with matching method name) → method call → removeMovieClip inside the getter callback, which is the minimal PoC trigger pattern ↗
• → Heap spray / heap fix pattern in exploit: Date object instantiation (new Date()) immediately after removeMovieClip() inside the getter is used to reclaim freed memory — flag SWFs exhibiting this pattern ↗

• · Vulnerability affects Adobe Flash Player before 18.0.0.366 (extended support), and 19.x–22.x before 22.0.0.209 on Windows/OS X, and before 11.2.202.632 on Linux; detections should be scoped to these version ranges ↗
• · CVE-2016-4231 is one of multiple use-after-free CVEs (CVE-2016-4173, CVE-2016-4174, CVE-2016-4222, CVE-2016-4226, CVE-2016-4227, CVE-2016-4228, CVE-2016-4229, CVE-2016-4230, CVE-2016-4248) sharing the same affected version ranges; behavioral detections may fire on any of these siblings ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd v2.0 9.3 CRITICAL AV:N/AC:M/Au:N/C:C/I:C/A:C

osv 8.8 HIGH

vendor_redhat 8.8 HIGH

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CWE-416