cbcvebase.
CVE-2016-3205
published 2016-06-16

CVE-2016-3205: The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to…

PriorityP273high7.5CVSS 3.0
AVNACHPRNUIRSUCHIHAH
ITWVulnCheck KEV
Exploited in the wild
EPSS
14.66%
96.3th percentile
The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-3206 and CVE-2016-3207.

Affected

8 ranges
VendorProductVersion rangeFixed in
microsoftjscript
microsoftvbscript
microsoftvbscript
msrcinternet_explorer_10
msrcinternet_explorer_11
msrcinternet_explorer_9
msrcvbscript_5.7
msrcvbscript_5.8

Detection & IOCsextracted from sources · hover to see the quote

  • Vulnerable scripting engine DLL: check jscript.dll file version starting with 5.8 in %systemroot%\system32 (or syswow64 on 64-bit) to identify exposure to CVE-2016-3205
  • Attack vector is a crafted web site delivered through Internet Explorer (versions 9–11) or via an ActiveX control embedded in an Office document; monitor for IE rendering engine invocations from Office processes or unusual ActiveX 'safe for initialization' control loads
  • Exploitation likelihood is rated 'More Likely' for both latest and older software releases — prioritise detection and patching on all IE 9/10/11 systems
  • CVE-2016-3205 is addressed by MS16-069 for IE 7 and earlier (KB patches), and by MS16-063 cumulative update for IE 8 and later; absence of these KBs indicates a vulnerable host
  • ·The vulnerability affects JScript 5.8 AND VBScript 5.7 and 5.8; both jscript.dll and vbscript.dll are shipped together in the cumulative update packages, but only the components listed as affected software are patched by each respective bulletin
  • ·Workaround (ACL restriction on vbscript.dll/jscript.dll) will break websites relying on VBScript or JScript; paths differ between 32-bit (%windir%\system32) and 64-bit (%windir%\syswow64) systems

CVSS provenance

nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.07.6HIGHAV:N/AC:H/Au:N/C:C/I:C/A:C
vulncheck7.5HIGH
vendor_msrc7.5MEDIUM
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