CVE-2022-33884 in AutoCAD
Summary
by MITRE • 10/03/2022
Parsing a maliciously crafted X_B file can force Autodesk AutoCAD 2023 and 2022 to read beyond allocated boundaries. This vulnerability in conjunction with other vulnerabilities could lead to code execution in the context of the current process.
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Analysis
by VulDB Data Team • 10/29/2022
The vulnerability identified as CVE-2022-33884 represents a critical buffer overflow condition affecting Autodesk AutoCAD versions 2022 and 2023. This flaw manifests during the parsing of specially crafted X_B files, which are typically used for storing geometric data and design information within the AutoCAD environment. The vulnerability stems from inadequate input validation mechanisms that fail to properly bounds-check data read from these external file formats, creating opportunities for malicious actors to manipulate memory access patterns.
The technical implementation of this vulnerability aligns with CWE-129, which describes improper validation of array index values, and CWE-787, which covers out-of-bounds write operations. When AutoCAD processes an attacker-controlled X_B file, the parsing routine does not sufficiently validate the size or structure of data elements before attempting to read or write memory locations. This insufficient boundary checking allows an attacker to craft malicious input that causes the application to access memory beyond allocated buffers, potentially leading to arbitrary code execution. The vulnerability operates at the application level where memory corruption can be leveraged to overwrite critical program structures or inject malicious code into the running AutoCAD process.
The operational impact of this vulnerability extends beyond simple memory corruption, as it creates a potential pathway for full system compromise when combined with other exploitation techniques. Attackers could potentially chain this vulnerability with additional flaws to achieve remote code execution, privilege escalation, or persistent access to systems running affected AutoCAD versions. The threat landscape for this vulnerability is particularly concerning given AutoCAD's widespread use in engineering, architecture, and manufacturing sectors where attackers may target high-value industrial control systems or design data repositories. The vulnerability's exploitation requires minimal user interaction, as simply opening a malicious X_B file within AutoCAD can trigger the buffer overflow condition.
Mitigation strategies for CVE-2022-33884 should prioritize immediate patch deployment from Autodesk, as the company has released security updates addressing this specific memory corruption issue. Organizations should implement network segmentation to limit access to AutoCAD installations and restrict the ability of external parties to deliver malicious X_B files. Additional protective measures include deploying application whitelisting solutions to prevent execution of unauthorized AutoCAD variants, enabling exploit protection features within operating systems, and conducting regular security assessments of design environments. From an ATT&CK framework perspective, this vulnerability maps to techniques such as T1059.007 for command and scripting interpreter execution and T1203 for exploitation for privilege escalation, emphasizing the need for comprehensive endpoint protection strategies that address both the immediate vulnerability and potential follow-on attacks.