CVE-2007-1408 in Vallheru
Summary
by MITRE
Multiple vulnerabilities in (1) bank.php, (2) landfill.php, (3) outposts.php, (4) tribes.php, (5) house.php, (6) tribearmor.php, (7) tribeastral.php, (8) tribeware.php, and (9) includes/head.php in Bartek Jasicki Vallheru before 1.3 beta have unknown impact and remote attack vectors, probably related to large integer values containing more than 15 digits. NOTE: the original vendor report is for integer overflows, but this is probably an incorrect usage of the term.
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Analysis
by VulDB Data Team • 08/26/2018
The vulnerability identified in Bartek Jasicki Vallheru version 1.3 beta represents a critical security flaw affecting multiple PHP script files within the application's codebase. These include bank.php, landfill.php, outposts.php, tribes.php, house.php, tribearmor.php, tribeastral.php, tribeware.php, and includes/head.php, all of which are susceptible to integer overflow conditions. The vulnerability stems from improper handling of large integer values exceeding 15 digits, which creates potential exploitation opportunities for remote attackers. The original vendor classification of integer overflows may be inaccurate as the actual issue likely involves improper validation and processing of numeric inputs that exceed standard integer limits.
The technical implementation of this vulnerability manifests through the application's failure to properly validate and sanitize integer inputs across multiple user interaction points within the game framework. When users provide numeric values that surpass the standard 15-digit integer capacity, the system's mathematical operations and data processing routines become susceptible to unexpected behavior. This condition can lead to memory corruption, unexpected program execution paths, and potentially arbitrary code execution depending on how the application handles these overflow scenarios. The affected files represent core game mechanics and user interface components that process numerical data for resource management, building operations, and tribe-related activities.
Operationally, this vulnerability creates significant risks for remote attackers who can exploit the integer handling flaws to manipulate game state and potentially gain unauthorized access to system resources. The remote attack vectors suggest that malicious actors can submit crafted numeric inputs through web forms or API endpoints without requiring local system access. The impact varies across the different vulnerable files, with some potentially allowing for resource manipulation while others might enable more severe privilege escalation or denial of service conditions. The complexity of the attack surface increases due to the multiple entry points, making comprehensive protection challenging for system administrators.
Mitigation strategies should focus on implementing robust input validation mechanisms across all affected files, particularly for any numeric data processing operations. Developers must ensure that all integer values are properly bounded and validated before processing, with specific attention to handling values that exceed standard integer limits. The implementation should include explicit checks for numeric overflow conditions and appropriate error handling for invalid inputs. Security measures should also incorporate regular input sanitization routines and consider implementing integer overflow protection libraries or frameworks. Additionally, system administrators should consider network-level protections such as web application firewalls and monitoring systems to detect and prevent exploitation attempts targeting these specific vulnerabilities. The remediation process requires careful code review and testing to ensure that all integer processing operations are properly secured without disrupting legitimate user functionality. This vulnerability aligns with common weakness enumerations related to integer handling and input validation, and represents a significant concern for applications processing user-supplied numerical data in web environments.