cbcvebase.
CVE-2016-3212
published 2016-06-16

CVE-2016-3212: The XSS Filter in Microsoft Internet Explorer 9 through 11 does not properly identify JavaScript, which makes it easier for remote attackers to conduct…

PriorityP275medium6.1CVSS 3.0
AVNACLPRNUIRSCCLILAN
ITWVulnCheck KEV
Exploited in the wild
EPSS
10.15%
95.1th percentile
The XSS Filter in Microsoft Internet Explorer 9 through 11 does not properly identify JavaScript, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, aka "Internet Explorer XSS Filter Vulnerability."

Affected

19 ranges
VendorProductVersion rangeFixed in
microsoftinternet_explorer
microsoftinternet_explorer
microsoftinternet_explorer
msrcinternet_explorer_10_on_windows_server_2012
msrcinternet_explorer_11_on_windows_10_for_32-bit_systems
msrcinternet_explorer_11_on_windows_10_for_x64-based_systems
msrcinternet_explorer_11_on_windows_10_version_1511_for_32-bit_systems
msrcinternet_explorer_11_on_windows_10_version_1511_for_x64-based_systems
msrcinternet_explorer_11_on_windows_7_for_32-bit_systems_service_pack_1
msrcinternet_explorer_11_on_windows_7_for_x64-based_systems_service_pack_1
msrcinternet_explorer_11_on_windows_8.1_for_32-bit_systems
msrcinternet_explorer_11_on_windows_8.1_for_x64-based_systems
msrcinternet_explorer_11_on_windows_rt_8.1
msrcinternet_explorer_11_on_windows_server_2008_r2_for_x64-based_systems_service_pac
msrcinternet_explorer_11_on_windows_server_2012_r2
msrcinternet_explorer_9_on_windows_server_2008_for_32-bit_systems_service_pack_2
msrcinternet_explorer_9_on_windows_server_2008_for_x64-based_systems_service_pack_2
msrcinternet_explorer_9_on_windows_vista_service_pack_2
msrcinternet_explorer_9_on_windows_vista_x64_edition_service_pack_2

Detection & IOCsextracted from sources · hover to see the quote

  • Vulnerability exists in the XSS Filter of Internet Explorer 9 through 11, which does not properly identify/validate JavaScript — look for crafted web requests targeting IE clients with obfuscated or malformed JavaScript payloads that may bypass the XSS filter
  • Exploitation results in code execution at medium-integrity level (current user permissions) — process integrity level monitoring on iexplore.exe spawning unexpected child processes may indicate post-exploitation activity
  • Attack vector is web-based; monitor for users being directed to attacker-controlled or compromised websites hosting specially crafted content targeting IE 9–11 XSS filter bypass
  • ·Patch KB3160005, KB3163017, and KB3163018 address this vulnerability; unpatched IE 9–11 installations remain at risk — verify patch deployment status

CVSS provenance

nvdv3.06.1MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
vulncheck6.1MEDIUM
vendor_msrc6.1LOW
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