cbcvebase.
CVE-2017-0234
published 2017-05-12

CVE-2017-0234: A remote code execution vulnerability exists in Microsoft Edge in the way that the Chakra JavaScript engine renders when handling objects in memory, aka…

PriorityP352high7.5CVSS 3.0
AVNACHPRNUIRSUCHIHAH
EPSS
38.12%
98.4th percentile
A remote code execution vulnerability exists in Microsoft Edge in the way that the Chakra JavaScript engine renders when handling objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This CVE ID is unique from CVE-2017-0224, CVE-2017-0228, CVE-2017-0229, CVE-2017-0230, CVE-2017-0235, CVE-2017-0236, and CVE-2017-0238.

Affected

12 ranges
VendorProductVersion rangeFixed in
microsoftinternet_explorer
microsoftinternet_explorer
microsoftinternet_explorer
microsoft_corporationmicrosoft_browsers
msrcmicrosoft_edge_on_windows_10_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_for_x64-based_systems
msrcmicrosoft_edge_on_windows_10_version_1511_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1511_for_x64-based_systems
msrcmicrosoft_edge_on_windows_10_version_1607_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1607_for_x64-based_systems
msrcmicrosoft_edge_on_windows_10_version_1703_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1703_for_x64-based_systems

Detection & IOCsextracted from sources · hover to see the quote

  • Attack vector is web-based: attacker hosts a specially crafted website targeting Microsoft browser JavaScript engines (Chakra/Scripting Engine) to corrupt memory via malicious object handling
  • Attack can also be delivered via ActiveX control marked 'safe for initialization' embedded in Office documents or applications hosting the rendering engine
  • Watering-hole / malvertising delivery is a viable vector — monitor for drive-by content on compromised sites or ad networks targeting Microsoft browser users
  • Exploitation targets the Microsoft Scripting Engine (JavaScript engine) memory object handling in Microsoft browsers; focus endpoint monitoring on browser child processes spawning unexpected code
  • ·Exploit Status at time of advisory: not publicly disclosed and not exploited in the wild, but rated 'Exploitation More Likely' for the latest software release — treat as high-priority patching target
  • ·Patching references: KB4019474, KB4019473, KB4019472, KB4016871 — verify applicable KB against deployed Windows/Edge versions before deploying

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
ghsa7.5HIGH
osv7.5HIGH
vendor_msrc4.2MEDIUM
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