CVE-2006-6226 in NeoEngine
Summary
by MITRE
Multiple format string vulnerabilities in NeoEngine 0.8.2 and earlier, and CVS 3422, allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) Console::Render in neoengine/console.cpp and (2) TextArea::Render in neowtk/textarea.cpp.
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Analysis
by VulDB Data Team • 08/09/2018
The vulnerability identified as CVE-2006-6226 represents a critical format string flaw affecting NeoEngine versions 0.8.2 and earlier, along with CVS version 3422. This security issue stems from improper input validation in two key rendering functions within the NeoEngine framework. The vulnerability manifests in the Console::Render function located in neoengine/console.cpp and the TextArea::Render function found in neowtk/textarea.cpp, both of which are integral components of the NeoEngine's user interface rendering system.
Format string vulnerabilities occur when application code uses user-supplied data as format strings without proper sanitization, creating opportunities for attackers to manipulate memory layout and execute arbitrary code. The affected functions process text rendering operations where external input is directly incorporated into format string operations, bypassing normal input validation mechanisms. This flaw falls under the CWE-134 vulnerability category, which specifically addresses the use of untrusted data in format string contexts, making it a direct descendant of the broader class of injection vulnerabilities that have plagued software systems for decades.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable remote code execution. Attackers can exploit these format string weaknesses by crafting malicious input that, when processed by the vulnerable rendering functions, can overwrite critical memory locations including return addresses, function pointers, or other program state variables. This capability allows adversaries to redirect program execution flow, potentially executing arbitrary code with the privileges of the affected application process. The vulnerability's remote exploitability means that attackers do not require local access to compromise systems, making it particularly dangerous in networked environments where the NeoEngine is deployed.
From an adversarial perspective, this vulnerability aligns with several techniques documented in the MITRE ATT&CK framework, specifically mapping to the T1059.007 technique for command and scripting interpreter with the use of format string exploitation. The attack chain typically begins with reconnaissance to identify systems running vulnerable versions of NeoEngine, followed by crafting malicious format strings that exploit the specific functions in question. The vulnerability's exploitation can result in complete system compromise, data exfiltration, or establishment of persistent backdoors through the execution of arbitrary code. Organizations using affected software versions should immediately implement mitigation strategies including input validation, patching, and network segmentation to prevent unauthorized exploitation attempts.
The remediation approach for this vulnerability requires immediate patching of affected NeoEngine versions to address the format string handling in both Console::Render and TextArea::Render functions. Additionally, implementing proper input sanitization measures and adopting secure coding practices that prevent direct use of user-supplied data in format string operations will help prevent similar vulnerabilities from emerging in future software releases. Organizations should also consider implementing intrusion detection systems that can identify exploitation attempts targeting these specific format string vulnerabilities.