CVE-2017-8588 in Windows
Summary
by MITRE
Microsoft WordPad in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability due to the way it parses specially crafted files, aka "WordPad Remote Code Execution Vulnerability".
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/14/2024
The CVE-2017-8588 vulnerability represents a critical remote code execution flaw in Microsoft WordPad across multiple Windows operating systems including Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 versions 1511, 1607, 1703, and Windows Server 2016. This vulnerability stems from WordPad's inadequate parsing of specially crafted files that can trigger arbitrary code execution when the application processes maliciously formatted documents. The flaw specifically affects the way WordPad handles certain file structures and metadata, creating a pathway for attackers to execute malicious code with the privileges of the logged-in user. The vulnerability is particularly concerning because WordPad is a built-in Windows application that users frequently interact with, making it an attractive target for exploitation.
The technical root cause of this vulnerability lies in improper input validation and memory handling within WordPad's file parsing mechanism. When WordPad encounters a specially crafted file containing malicious code or malformed data structures, it fails to properly sanitize or validate the input before processing. This leads to memory corruption issues that can be exploited to overwrite critical memory locations and ultimately execute arbitrary code. The vulnerability is classified under CWE-125, which represents "Out-of-bounds Read" conditions, and also aligns with CWE-787, "Out-of-bounds Write," indicating that the parsing error results in buffer overflow conditions. The attack vector typically involves tricking users into opening malicious files through social engineering tactics, phishing emails, or compromised websites that deliver the malicious WordPad documents.
The operational impact of CVE-2017-8588 extends beyond simple remote code execution, as it provides attackers with a potential foothold for further system compromise and lateral movement within networks. Once successfully exploited, the vulnerability allows attackers to execute commands with the privileges of the current user, potentially leading to full system compromise, data exfiltration, or deployment of additional malware. The vulnerability is particularly dangerous in enterprise environments where WordPad is frequently used for document review and editing tasks. The attack surface is broad given that the affected operating systems span multiple Windows versions and server configurations, making this vulnerability a prime target for nation-state actors and cybercriminals seeking to maximize their exploitation potential. According to ATT&CK framework, this vulnerability maps to T1203, "Exploitation for Client Execution," and T1059, "Command and Scripting Interpreter," as it enables attackers to execute malicious commands through the compromised WordPad application.
Mitigation strategies for CVE-2017-8588 should include immediate deployment of Microsoft security updates and patches, which address the underlying parsing vulnerability in WordPad. Organizations should implement strict file validation policies and disable unnecessary applications like WordPad from user workstations where possible. Network segmentation and application whitelisting controls can help limit the potential impact of successful exploitation attempts. Security teams should also monitor for suspicious file opening activities and implement email filtering solutions to prevent delivery of malicious WordPad documents through phishing campaigns. The vulnerability demonstrates the importance of maintaining up-to-date security patches and highlights the risks associated with legacy operating systems that may not receive continued security support, making regular system updates and security assessments crucial for maintaining organizational security posture.