CVE-2017-8725 in Publisher
Summary
by MITRE
A remote code execution vulnerability exists in Microsoft Publisher 2007 Service Pack 3 and Microsoft Publisher 2010 Service Pack 2 when they fail to properly handle objects in memory, aka "Microsoft Office Publisher Remote Code Execution".
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Analysis
by VulDB Data Team • 01/12/2021
This vulnerability represents a critical remote code execution flaw in Microsoft Publisher applications that affects versions 2007 Service Pack 3 and 2010 Service Pack 2. The issue stems from improper memory handling when processing specially crafted objects within Publisher files, creating a pathway for attackers to execute arbitrary code on vulnerable systems. The vulnerability falls under the category of memory corruption issues and aligns with CWE-125, which describes out-of-bounds read conditions that can lead to unexpected behavior and potential code execution. Attackers can exploit this weakness by crafting malicious Publisher files that, when opened by an affected version, trigger the memory handling flaw and allow remote code execution.
The technical exploitation of this vulnerability occurs through the manipulation of memory objects during file processing, specifically targeting the way Publisher handles embedded or referenced objects within document structures. When a user opens a maliciously crafted file, the application's memory management routines fail to properly validate or sanitize object references, leading to memory corruption that can be leveraged to execute attacker-controlled code. This type of vulnerability is particularly dangerous in enterprise environments where users may inadvertently open malicious documents through email attachments or web downloads, making it a prime target for phishing campaigns and targeted attacks. The ATT&CK framework categorizes this as a remote code execution technique that leverages application vulnerabilities to gain unauthorized system access.
The operational impact of this vulnerability extends beyond simple code execution, as it can enable full system compromise when combined with other attack vectors or when executed in environments with elevated privileges. Organizations running affected Publisher versions face significant risk from both external attackers seeking to exploit the vulnerability and internal threat actors who may leverage it for lateral movement within networks. The vulnerability affects not only individual user workstations but also enterprise document sharing systems where Publisher files are commonly exchanged, creating widespread potential for exploitation across network boundaries.
Mitigation strategies for this vulnerability include immediate application of Microsoft security patches and updates, which address the memory handling flaws in the affected Publisher versions. Organizations should implement strict document validation policies and consider deploying email filtering solutions to prevent malicious Publisher files from reaching end users. Network segmentation and user privilege controls can help limit the potential impact if exploitation occurs, while regular security awareness training can reduce the likelihood of users opening malicious documents. Additionally, implementing application whitelisting policies that restrict execution of unauthorized software can provide an additional layer of defense against exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date software patches and the critical role of proper memory management in preventing remote code execution attacks.