CVE-2019-10948 in FCR Carbon X
Summary
by MITRE
Fujifilm FCR Capsula X/ Carbon X/ FCR XC-2, model versions CR-IR 357 FCR Carbon X, CR-IR 357 FCR XC-2, FCR-IR 357 FCR Capsula X are susceptible to a denial-of-service condition as a result of an overflow of TCP packets, which requires the device to be manually rebooted.
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Analysis
by VulDB Data Team • 09/06/2023
The vulnerability identified as CVE-2019-10948 affects Fujifilm FCR Capsula X, Carbon X, and FCR XC-2 camera models, specifically those with firmware versions CR-IR 357. This issue represents a critical network security flaw that manifests as a denial-of-service condition, fundamentally compromising the operational availability of these imaging devices. The affected models are widely used in professional photography and videography applications where continuous operation is essential for workflow integrity.
The technical flaw stems from an insufficient handling of TCP packet overflow conditions within the device's network stack implementation. When the device receives an excessive number of TCP packets beyond its processing capacity, the system becomes overwhelmed and enters a state where it can no longer properly manage network communications. This overflow condition triggers a cascading failure within the device's network services, causing the system to become unresponsive and ultimately requiring manual intervention through device rebooting to restore normal operation. The vulnerability is classified as a buffer overflow condition that affects the TCP/IP protocol handling mechanisms within the embedded operating system.
The operational impact of this vulnerability extends beyond simple service interruption, as it creates significant reliability concerns for professional users who depend on these devices for critical work. In professional photography and videography environments, where equipment downtime can result in lost opportunities and revenue, this vulnerability poses a substantial risk. The requirement for manual rebooting means that operators must be present to address the issue, creating potential workflow disruptions and operational inefficiencies. The vulnerability is particularly concerning in environments where these devices are deployed in automated systems or remote locations where immediate physical access may not be feasible.
Mitigation strategies for this vulnerability should focus on both immediate protective measures and long-term architectural improvements. Network administrators should implement rate limiting and packet filtering rules to prevent excessive TCP traffic from reaching affected devices, while also considering network segmentation to isolate these devices from potentially malicious traffic sources. The most effective long-term solution involves applying firmware updates from Fujifilm that address the TCP packet handling overflow condition. Organizations should also establish monitoring protocols to detect unusual network traffic patterns that might indicate exploitation attempts. This vulnerability aligns with CWE-129, which addresses improper handling of buffer overflows, and represents a potential entry point for attackers seeking to disrupt critical imaging operations in accordance with ATT&CK technique T1499.1, which covers network denial-of-service attacks targeting network infrastructure components.