CVE-2007-0870 in Word
Summary
by MITRE
Unspecified vulnerability in Microsoft Word 2000 allows remote attackers to cause a denial of service (crash) via unknown vectors, a different vulnerability than CVE-2006-5994, CVE-2006-6456, CVE-2006-6561, and CVE-2007-0515, a variant of Exploit-MS06-027.
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Analysis
by VulDB Data Team • 01/12/2025
This vulnerability resides within Microsoft Word 2000 and represents a remote denial of service condition that can be triggered through unspecified attack vectors. The flaw specifically affects the word processing application's handling of certain input data, causing the application to crash and become unavailable to legitimate users. Unlike other documented vulnerabilities such as CVE-2006-5994, CVE-2006-6456, CVE-2006-6561, and CVE-2007-0515, this particular vulnerability operates through different mechanisms and represents a distinct threat vector. The vulnerability shares characteristics with Exploit-MS06-027, indicating it may stem from similar underlying code execution issues or memory management problems within the application's processing routines. This classification places the vulnerability within the broader context of software reliability and stability concerns that affect Microsoft Office applications, particularly those released in the early 2000s when security considerations were less mature than current standards.
The technical nature of this vulnerability suggests a failure in input validation or memory handling within Word 2000's document processing engine. Attackers can craft malicious documents or input sequences that, when processed by the vulnerable application, trigger unexpected behavior leading to application termination. This type of vulnerability typically involves buffer overflows, invalid memory access patterns, or improper exception handling that occurs during document parsing operations. The unspecified vectors indicate that multiple attack paths may exist, potentially including malformed document structures, embedded objects, or specific formatting elements that cause the application to fail during normal processing operations. Such vulnerabilities are particularly dangerous in enterprise environments where Word 2000 may be used for document processing and collaboration, as they can be exploited to disrupt business operations through targeted denial of service attacks.
The operational impact of this vulnerability extends beyond simple application crashes to potentially disrupt business continuity and productivity within organizations. When Word 2000 crashes due to this vulnerability, users lose access to their documents and may experience data loss if they have not saved their work. In networked environments, this vulnerability could be exploited to create persistent denial of service conditions against specific users or systems running the vulnerable software. The vulnerability's relationship to Exploit-MS06-027 suggests it may be part of a broader class of flaws affecting Microsoft Office applications from this era, particularly those related to document parsing and object handling. Organizations using legacy software versions may find themselves vulnerable to multiple related exploits, creating cascading effects that can compromise entire document processing workflows and potentially provide attackers with opportunities to escalate their attacks through additional exploitation vectors.
Mitigation strategies for this vulnerability primarily focus on software updates and operational security measures. Microsoft has likely released patches or updates to address this specific vulnerability, though given the age of Word 2000, support may have been discontinued. Organizations should consider migrating to supported versions of Microsoft Office that include proper input validation and memory protection mechanisms. Network-based protections such as email filtering and document scanning can help prevent exploitation attempts by identifying and blocking potentially malicious documents before they reach end-user systems. The vulnerability's classification aligns with common weakness enumerations such as CWE-125, which deals with out-of-bounds read conditions, and CWE-129, which addresses improper validation of array indices. From an attack framework perspective, this vulnerability would be categorized under the denial of service tactics of the MITRE ATT&CK framework, potentially falling under techniques related to service availability compromise and system resource exhaustion. Given the age of this vulnerability, organizations should prioritize upgrading their software infrastructure to eliminate exposure to such legacy threats that may serve as entry points for more sophisticated attacks.