CVE-2023-40652 in T606
Summary
by MITRE • 10/25/2023
In jpg driver, there is a possible out of bounds write due to improper input validation. This could lead to local denial of service with System execution privileges needed
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Analysis
by VulDB Data Team • 10/27/2023
The vulnerability identified as CVE-2023-40652 resides within the jpg driver component of a system, representing a critical out-of-bounds write condition that stems from inadequate input validation mechanisms. This flaw manifests when the driver processes jpeg image files, specifically during the parsing or rendering operations where it fails to properly validate the boundaries of input data. The improper validation allows maliciously crafted jpeg files to trigger memory corruption behaviors that extend beyond the intended buffer boundaries, creating potential pathways for system instability and exploitation.
The technical nature of this vulnerability aligns with CWE-787, which describes out-of-bounds write conditions that occur when a program writes data past the end of a buffer. This specific implementation flaw in the jpg driver demonstrates how insufficient boundary checks during image processing can result in memory corruption that may be leveraged for more severe consequences. The vulnerability requires system execution privileges to exploit effectively, indicating that it operates at a privileged level where it can directly manipulate system memory structures. This privilege requirement suggests the vulnerability exists within kernel-mode or system-level components that handle image processing functionality.
From an operational impact perspective, this vulnerability creates a significant risk for local denial of service scenarios where an attacker with access to the system can potentially crash the jpg driver or the entire system. The out-of-bounds write condition can corrupt adjacent memory regions, leading to unpredictable behavior including system crashes, application failures, or in more severe cases, privilege escalation opportunities. The local nature of the attack means that an attacker must already have system access or be able to execute code locally, but once exploited, the consequences can be severe as it affects core system functionality that handles image rendering operations.
The exploitation of this vulnerability follows patterns consistent with ATT&CK technique T1059.001, which involves command and scripting interpreter usage, as attackers may leverage this flaw to execute malicious code within the system context where the jpg driver operates. The vulnerability also relates to ATT&CK technique T1203, which describes exploitation of software vulnerabilities, specifically targeting driver-level components that handle multimedia processing. Mitigation strategies should focus on implementing robust input validation mechanisms within the jpg driver, including bounds checking for all buffer operations, memory sanitization procedures, and regular driver updates from vendors. System administrators should also consider implementing privilege separation techniques and monitoring for unusual memory access patterns that might indicate exploitation attempts. Additionally, the vulnerability highlights the importance of secure coding practices and comprehensive testing of driver components, particularly those handling user-supplied data such as image files, to prevent similar issues in future implementations.