CVE-2020-16911

published 2020-10-16

CVE-2020-16911: A remote code execution vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in the memory. An attacker who…

Priority P3 54 high 8.8 CVSS 3.1

AV N AC L PR N UI R S U C H I H A H

A remote code execution vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in the memory. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
There are multiple ways an attacker could exploit the vulnerability:

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince users to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to open an email attachment or click a link in an email or instant message.
In a file-sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit the vulnerability, and then convince users to open the document file.

The security update addresses the vulnerability by correcting the way that the Windows GDI handles objects in the memory.

Affected

44 ranges · showing 25

Vendor	Product	Version range	Fixed in
microsoft	windows_10	—	—
microsoft	windows_10	—	—
microsoft	windows_10	—	—
microsoft	windows_10	—	—
microsoft	windows_10	—	—
microsoft	windows_10	—	—
microsoft	windows_10	—	—
microsoft	windows_10_version_1507	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1607	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1709	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1709_for_32-bit_systems	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1803	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1809	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1903_for_32-bit_systems	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1903_for_arm64-based_systems	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1903_for_x64-based_systems	>= 10.0.0 < publication	publication
microsoft	windows_10_version_1909	>= 10.0.0 < publication	publication
microsoft	windows_10_version_2004	>= 10.0.0 < publication	publication
microsoft	windows_8.1	>= 6.3.0 < publication	publication
microsoft	windows_server_2012	—	—
microsoft	windows_server_2012	>= 6.2.0 < publication	publication
microsoft	windows_server_2012_r2	>= 6.3.0 < publication	publication
microsoft	windows_server_2016	—	—
microsoft	windows_server_2016	—	—
microsoft	windows_server_2016	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → Exploit delivery via specially crafted website — monitor for users browsing to attacker-controlled content that triggers GDI+ memory object handling ↗
• → Exploit delivery via malicious document file — monitor for suspicious document opens (email attachments or file-share documents) that invoke GDI+ rendering ↗
• → Phishing vector — monitor for email attachments and links leading to document or web-based GDI+ exploit payloads ↗

• · Exploit Status is 'Exploitation Less Likely' for both latest and older software releases, and not yet publicly exploited as of advisory publication — prioritize patching over active threat hunting ↗
• · Vulnerability resides in Windows GDI (Graphics Device Interface / GDI+) memory object handling — scope detection to processes that invoke GDI+ rendering (e.g., document viewers, browsers, image handlers) ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd v2.0 9.3 CRITICAL AV:N/AC:M/Au:N/C:C/I:C/A:C

vendor_msrc 8.8 HIGH

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