CVE-2016-4228

published 2016-07-13

CVE-2016-4228: 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-2016-4229, CVE-2016-4230, CVE-2016-4231, 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/40309.zip↗

command ASnative(900, 405)↗

• → Use-after-free triggered via MovieClip.scrollRect getter abuse — monitor for Flash content invoking ASnative(900, 405) (scrollRect native) combined with addProperty on flash.geom package to intercept Rectangle constructor lookup ↗
• → Exploit pattern involves adding a getter property to flash.geom package ('Rectangle') that calls removeMovieClip() to free the thread mid-execution — look for ActionScript using g.addProperty("Rectangle", ...) on the flash.geom namespace ↗
• → PoC delivered as a .swf file inside a ZIP archive; inspect downloaded ZIP files containing SWF payloads referencing scrollRect and flash.geom.Rectangle manipulation ↗
• → Vulnerability affects Adobe Flash Player before 22.0.0.209 on Windows/OS X and before 11.2.202.632 on Linux; flag processes running outdated Flash versions in endpoint telemetry ↗

• · The NVD source document is for CVE-2016-4229, not CVE-2016-4228; CVE-2016-4228 is listed as one of several related use-after-free variants sharing the same Flash Player version range — IOCs from the PoC are specific to the scrollRect/Rectangle UAF chain described in exploit-db #40309 which is attributed to CVE-2016-4228 via the Project Zero bug #842 reference ↗

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