CVE-2003-1053 in XShisen
Summary
by MITRE
Multiple buffer overflows in XShisen allow attackers to execute arbitrary code via a long (1) -KCONV command line option or (2) XSHISENLIB environment variable.
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Analysis
by VulDB Data Team • 06/07/2019
The vulnerability described in CVE-2003-1053 represents a critical security flaw in the XShisen puzzle game application that affects multiple buffer overflow conditions. This vulnerability exists within the command line argument processing and environment variable handling mechanisms of the software, creating opportunities for remote code execution attacks. The flaw specifically manifests when the application processes the -KCONV command line option or the XSHISENLIB environment variable, both of which can trigger buffer overflow conditions that allow malicious actors to overwrite memory segments and potentially execute arbitrary code on affected systems.
The technical implementation of this vulnerability stems from inadequate input validation and buffer management within the XShisen application. When processing the -KCONV command line argument or the XSHISENLIB environment variable, the software fails to properly bounds-check user-supplied input data against predefined buffer sizes. This lack of proper input sanitization creates exploitable conditions where attacker-controlled data can overflow allocated memory buffers, potentially overwriting adjacent memory locations including return addresses, function pointers, or other critical program state information. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios that can occur with improper memory management.
The operational impact of this vulnerability extends beyond simple denial of service conditions to encompass full system compromise capabilities. Attackers who successfully exploit these buffer overflows can gain arbitrary code execution privileges on systems running vulnerable versions of XShisen, potentially allowing them to install backdoors, escalate privileges, or establish persistent access to affected hosts. The vulnerability affects systems where XShisen is installed and executable, particularly those running Unix-like operating systems where environment variables and command line arguments are commonly processed. From an adversarial perspective, this vulnerability represents a significant attack surface that could be leveraged in broader exploitation campaigns targeting desktop environments or networked systems where XShisen might be present.
Mitigation strategies for this vulnerability should focus on immediate patching and input validation improvements. System administrators should prioritize updating to patched versions of XShisen that address the buffer overflow conditions in both command line argument processing and environment variable handling. Additionally, implementing proper input validation measures including bounds checking, length validation, and secure coding practices can prevent similar vulnerabilities from occurring in future software implementations. The vulnerability demonstrates the importance of adhering to secure coding principles and following established security frameworks such as those outlined in the software security development lifecycle. Organizations should also consider implementing runtime protections such as stack canaries, address space layout randomization, and other exploit mitigations to reduce the effectiveness of potential exploitation attempts. From an ATT&CK framework perspective, this vulnerability would map to techniques involving command and control communications, privilege escalation, and execution through environment variables, making it a significant concern for enterprise security teams managing desktop and server environments where such applications might be present.