cbcvebase.
CVE-2015-5122
published 2015-07-14

CVE-2015-5122: Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and…

PriorityP197critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
KEVITWEXPLOITRansomware
CISA Known Exploited Vulnerabilitydue 2022-05-04
Exploited in the wild
EPSS
93.89%
99.8th percentile
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that leverages improper handling of the opaqueBackground property, as exploited in the wild in July 2015.

Affected

16 ranges
VendorProductVersion rangeFixed in
adobeflash_player11.0 – 11.2.202.481—
adobeflash_player13.0 – 13.0.0.302—
adobeflash_player18.0 – 18.0.0.203—
adobeflash_player18.0 – 18.0.0.204—
adobeflash_player_desktop_runtime18.0 – 18.0.0.203—
opensuseevergreen——
redhatenterprise_linux_desktop——
redhatenterprise_linux_desktop——
redhatenterprise_linux_server——
redhatenterprise_linux_server——
redhatenterprise_linux_server_eus——
redhatenterprise_linux_workstation——
redhatenterprise_linux_workstation——
suselinux_enterprise_desktop——
suselinux_enterprise_desktop——
suselinux_enterprise_workstation_extension——

Detection & IOCsextracted from sources · hover to see the quote

hash31d03169b9742a0ff04e3d24bb448bbf↗
hashfcecd6b624bb50301a17d5aa423e135d↗
hash319500B2C792AEE6CD8EF8EE87D9DC1E↗
hash723DB4F13E98364098D76B925EA197F9ECD5309B↗
hash27439ADAA07F5AD16EB8039C16ECEB4E71F6358E7FC13AC645E8878DA8C3E77E↗
filenamemovie.swf↗
path%TEMP%\Rdws.exe↗
path%TEMP%\FASAP.DAT↗
path%TEMP%\FASAPI.bat↗
path%TEMP%\FASAPI.bin↗
ip172.246.109.27↗
url//STravel.asp↗
url//SJobs.asp↗
url//SSports.asp↗
url//SWeather.asp↗
  • →The exploit SWF file (movie.swf) uses ZWS compression to evade AV; scan for ZWS-compressed SWF files delivered from web pages as a detection signal. ↗
  • →IsSpace drops payload to %TEMP%\Rdws.exe and executes via WinExec; alert on process creation of Rdws.exe from a temp directory. ↗
  • →IsSpace uses a DLL side-loading technique via sysprep.exe loading a dropped CryptBase.dll; monitor for CryptBase.dll loaded from %windir%\system32\sysprep\ when not expected. ↗
  • →CVE-2015-5122 exploits were rapidly weaponized and added to exploit kits (e.g., Angler) following the Hacking Team leak; prioritize blocking/patching Flash in EK-exposed environments. ↗
  • ·The two in-the-wild MD5 hashes (31d03169... and fcecd6b6...) are attributed to CVE-2015-5122 exploit samples by Zscaler but no further file metadata is provided in the source. ↗
  • ·The IsSpace payload (MD5: 319500B2C792AEE6CD8EF8EE87D9DC1E) has a compile timestamp of 2014-11-14, predating the CVE-2015-5122 exploit delivery; the malware infrastructure may have been active for months before this campaign. ↗
  • ·The C2 IP 172.246.109.27 is hardcoded in this specific IsSpace sample; other samples or campaigns may use different infrastructure. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
osv9.8CRITICAL
vulncheck9.8CRITICAL
cisa9.8CRITICAL
vendor_redhat9.8CRITICAL
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