cbcvebase.
CVE-2014-8440
published 2014-11-11

CVE-2014-8440: Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356…

PriorityP273critical10CVSS 2.0
AVNACLAuNCCICAC
EXPLOIT
EPSS
81.94%
99.6th percentile
Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK before 15.0.0.356, and Adobe AIR SDK & Compiler before 15.0.0.356 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2014-0576, CVE-2014-0581, and CVE-2014-8441.

Affected

7 ranges
VendorProductVersion rangeFixed in
adobeair<= 15.0.0.356
adobeair_sdk<= 15.0.0.356
adobeair_sdk_compiler< 15.0.0.35615.0.0.356
adobeflash_player>= 11.0 < 11.2.202.41811.2.202.418
adobeflash_player>= 13.0 < 13.0.0.25213.0.0.252
adobeflash_player14.0 – 14.0.0.179
adobeflash_player>= 15.0 < 15.0.0.22315.0.0.223

Detection & IOCsextracted from sources · hover to see the quote

pathdata/exploits/CVE-2014-8440/msf.swf
urlhttps://helpx.adobe.com/security/products/flash-player/apsb14-24.html
otherContent-Type: application/x-shockwave-flash
  • The exploit delivers a malicious SWF file via HTTP with Content-Type 'application/x-shockwave-flash' and Cache-Control/Pragma no-cache headers; detect HTTP responses serving SWF content with these specific no-cache directives in combination with exploit landing pages.
  • The exploit targets Internet Explorer (IE 8 / IE11) on Windows 7 SP1 (32-bit) with Adobe Flash 15.x (specifically tested on 15.0.0.189); scope detection to this browser/OS/Flash version combination.
  • The exploit HTML template embeds a SWF via an <object> tag with FlashVars containing a base64-encoded PowerShell payload ('sh=<b64>'); detect HTML responses containing 'FlashVars' with a 'sh=' parameter holding a large base64 string.
  • The exploit SWF filename is randomized (rand_text_alpha) with a .swf extension; the Metasploit module serves it from the path matching /\.swf$/ — monitor for randomized short-alpha .swf filenames served from exploit kit infrastructure.
  • The vulnerability is triggered in ByteArray::UncompressViaZlibVariant; memory forensics or crash analysis showing uninitialized memory access in this Flash method is indicative of CVE-2014-8440 exploitation.
  • ·The Metasploit module requires the browser source to match /script|headers/i, OS to be Windows 7, UA to be Internet Explorer, and Flash version to match /^15\./ — the exploit will not trigger outside these constraints.
  • ·The exploit is architecture-specific (x86 only); 64-bit targets are not affected by this module.

CVSS provenance

nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
osv10.0CRITICAL
vendor_redhat10.0CRITICAL
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