CVE-2023-48356 in SC7731E
Summary
by MITRE • 01/18/2024
In jpg driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service with System execution privileges needed
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Analysis
by VulDB Data Team • 02/12/2024
The vulnerability identified as CVE-2023-48356 resides within the jpg driver component of a system, representing a critical security flaw that could be exploited to cause system instability. This issue manifests as a potential out of bounds write condition, which occurs when the driver fails to properly validate input data boundaries before processing image files. The absence of bounds checking in the jpeg decoding routine creates an exploitable condition where maliciously crafted image data could cause the driver to write beyond allocated memory regions, potentially leading to system crashes or unexpected behavior.
The technical nature of this vulnerability aligns with CWE-787, which specifically addresses out-of-bounds write conditions that occur when a program writes to memory beyond the boundaries of a buffer. This flaw operates at the kernel level within the jpg driver, making it particularly dangerous as it requires system execution privileges to exploit but can result in local denial of service. The vulnerability's impact is amplified by its location within a critical system component responsible for image processing, where legitimate image files could be corrupted or manipulated to trigger the out of bounds write condition.
From an operational perspective, this vulnerability presents a significant risk to system availability and stability. Attackers with local access could potentially leverage this flaw to cause system crashes, forcing administrators to restart services or reboot systems. The requirement for system execution privileges indicates that exploitation would need a user to already have elevated access rights, but the potential for escalation remains high given the nature of kernel-level drivers. The local denial of service aspect means that while the attack vector is limited to local access, the impact could be severe enough to disrupt critical system operations.
Mitigation strategies for CVE-2023-48356 should focus on immediate patching of the affected jpg driver component, as this represents the most effective solution to prevent exploitation. System administrators should prioritize applying vendor-provided security updates and patches as soon as they become available. Additionally, implementing input validation measures and boundary checking within the driver code would provide additional protection against similar vulnerabilities. Network segmentation and least privilege access controls can help limit the potential impact of exploitation by reducing the likelihood that attackers can gain the necessary system execution privileges to exploit this flaw.
The vulnerability demonstrates the importance of robust input validation in kernel-level components, as highlighted by ATT&CK technique T1068 which addresses local privilege escalation. Organizations should conduct thorough security assessments of their driver components and implement continuous monitoring to detect potential exploitation attempts. Regular security audits of system drivers and image processing components can help identify similar boundary checking deficiencies that may exist in other system components, thereby strengthening overall system security posture and reducing the attack surface available to potential adversaries.