CVE-2024-20094 in MT2735
Summary
by MITRE • 10/07/2024
In Modem, there is a possible system crash due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00843282; Issue ID: MSV-1535.
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Analysis
by VulDB Data Team • 04/26/2025
The vulnerability identified as CVE-2024-20094 resides within the modem component of a telecommunications or networking system, representing a critical security flaw that could result in system instability and denial of service conditions. This issue manifests as a missing bounds check during modem operation, which creates a potential avenue for exploitation that does not require any special privileges or user interaction to execute successfully. The vulnerability specifically impacts the modem's ability to properly validate input data ranges, leading to scenarios where malformed or unexpected input could cause the system to crash or become unresponsive.
The technical nature of this vulnerability aligns with CWE-129, which describes issues related to insufficient bounds checking or range checking in software implementations. When a system fails to properly validate the boundaries of input data, it creates opportunities for memory corruption or resource exhaustion that can ultimately result in system crashes. The absence of bounds checking in the modem's processing logic means that external attackers can potentially send malicious data packets or commands that exceed expected parameter limits, triggering undefined behavior within the modem firmware or software stack. This type of vulnerability falls under the category of memory safety issues that have been increasingly targeted in recent years due to their ability to cause system instability without requiring elevated privileges.
The operational impact of this vulnerability extends beyond simple system crashes, as it represents a potential vector for remote denial of service attacks that could disrupt communication services or network connectivity. Since no user interaction is required for exploitation, attackers can potentially target these systems remotely without needing physical access or specialized knowledge of the target environment. The lack of additional execution privileges needed for exploitation makes this vulnerability particularly concerning as it can be leveraged by threat actors with minimal technical expertise. The patch identifier MOLY00843282 and issue reference MSV-1535 indicate that this vulnerability has been recognized and addressed by the vendor, though the specific technical details of the patch implementation remain undisclosed in the public description.
Mitigation strategies for this vulnerability should prioritize immediate deployment of the available patch MOLY00843282, which likely implements proper bounds checking mechanisms within the modem's input validation routines. Organizations should also consider implementing network segmentation and monitoring solutions to detect unusual traffic patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of robust input validation practices in embedded systems and modem firmware, aligning with ATT&CK technique T1499.004 which covers network denial of service attacks. System administrators should conduct thorough testing of the patch in controlled environments before deployment to ensure compatibility with existing network infrastructure and avoid unintended service disruptions. Additionally, implementing intrusion detection systems that monitor for anomalous modem behavior or unexpected crash patterns can provide early warning capabilities for potential exploitation attempts.