External risk intelligence

Microsoft WordPad Information Disclosure Vulnerability

CVE advisoryKnown Exploit

CVE-2023-36563

Microsoft WordPad has an information disclosure vulnerability. Affected systems could allow attackers to access sensitive data if a specially crafted file is opened by a user. This presents a risk to organizational data confidentiality. Organizations should apply vendor updates to mitigate this risk.

1Halo Surface Signal

Information Disclosure

Microsoft Windows 10 1507

before 10.0.10240.20232before 10.0.14393.6351before 10.0.17763.4974before 10.0.19041.3570before 10.0.19045.3570before 10.0.22000.2538before 10.0.22621.2428r2before 10.0.20348.2031

External exposure likelihood

Halo Surface Signal score for CVE-2023-36563

This vulnerability affects Microsoft WordPad, a desktop application bundled with the Windows operating system. It is a client-side utility that operates locally on a user's machine and does not provide public-facing network services, gateways, or web-accessible endpoints.

Horizon Alert

Summary of the vulnerability and why it matters

Microsoft WordPad contains a vulnerability that could allow an attacker to disclose sensitive information. This flaw resides within the application's handling of specific data. Successful exploitation could lead to unauthorized access to information stored on the affected system.

  • Vulnerable component: Microsoft WordPad
  • Core weakness: Unspecified vulnerability
  • Main business impact: Information disclosure

Attack Path

How an attacker could exploit the issue

This vulnerability allows an attacker to gain information disclosure through Microsoft WordPad. The attack vector is local, meaning the attacker must have some form of access to the affected system. Successful exploitation could lead to the exposure of sensitive data.

  • Attacker requires local access.
  • User opens a specially crafted file.
  • Sensitive information is disclosed.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in Microsoft WordPad could allow an attacker to disclose sensitive information from an affected system. The attack requires the user to interact with a specially crafted document, which, if opened, could lead to the disclosure of information. The potential for information disclosure presents a risk to organizational data confidentiality.

  • Attacker skill level is low.
  • Requires user interaction with a malicious file.
  • Business risk is moderate.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability may allow attackers to disclose information. The vendor has provided updates to address this issue. Organizations should prioritize assessing their environment and applying necessary fixes to mitigate potential risks.

  • Find affected systems.
  • Apply vendor security updates.
  • Verify the fix.
  • Monitor for related activity.

Frequently asked questions

What is Microsoft WordPad and its role in Windows?

Microsoft WordPad is a basic word processing utility included with Windows operating systems. It is designed for creating and editing simple documents, serving as a less complex alternative to Microsoft Word for everyday tasks. This application operates locally on a user's computer.

What kind of weakness is CVE-2023-36563 and what is its classification?

CVE-2023-36563 is a weakness classified under CWE-20, indicating improper input validation. This means the vulnerability arises because WordPad does not adequately check or manage certain data it receives, potentially leading to unintended consequences or exploitation.

How might CVE-2023-36563 be triggered and what is the scope of its impact?

Exploitation of this vulnerability requires local access to the affected system. An attacker could trigger it by convincing a user to open a specially crafted file within WordPad. The scope is not broadened beyond the local system, as the vulnerability does not allow for system-wide changes.

What is the relevance of the Halo Surface Signal to CVE-2023-36563?

The Halo Surface Signal indicates a 'Very unlikely' risk for this vulnerability. This assessment is based on WordPad being a local, client-side application without public-facing network services, making it a less attractive target for broad exploitation.

What steps should be taken to respond to this vulnerability?

Organizations should identify all systems running affected versions of Microsoft WordPad, apply the security updates provided by the vendor, and subsequently verify that the patches have been successfully implemented. Continuous monitoring for any related suspicious activity is also recommended.

References