CVE-2024-44094 in Android
Summary
by MITRE • 09/14/2024
In ppmp_protect_mfcfw_buf of code/drm_fw.c, there is a possible memory corruption due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 09/18/2024
The vulnerability identified as CVE-2024-44094 resides within the ppmp_protect_mfcfw_buf function located in the code/drm_fw.c file of a targeted system. This flaw represents a critical memory corruption issue that stems from inadequate input validation mechanisms. The function processes memory protection operations for firmware buffers, creating a pathway where malformed inputs can corrupt adjacent memory regions. Such memory corruption vulnerabilities typically arise when developers fail to properly validate buffer boundaries, data lengths, or input parameters before processing. The vulnerability falls under the category of improper input validation as classified by CWE-20, which directly relates to the absence of proper checks that should prevent malicious data from causing unintended memory behavior.
The technical exploitation of this vulnerability enables local privilege escalation without requiring any additional execution privileges or user interaction. This means that an attacker with normal user-level access can leverage this flaw to gain elevated system privileges, effectively bypassing security boundaries. The absence of user interaction requirements makes this vulnerability particularly dangerous as it can be exploited automatically without any human intervention. The memory corruption occurs during firmware buffer protection operations, suggesting that the system's device driver or firmware management components are susceptible to malformed input that can overwrite critical memory structures. This type of vulnerability aligns with ATT&CK technique T1068, which covers local privilege escalation through exploitation of system-level vulnerabilities.
The operational impact of CVE-2024-44094 extends beyond simple privilege escalation as it fundamentally compromises system integrity and confidentiality. When an attacker successfully exploits this vulnerability, they can potentially access sensitive system resources, modify critical firmware components, or establish persistent backdoors within the system. The local escalation of privilege means that the attacker's initial access level can be elevated to system-level privileges, providing access to all system resources and potentially enabling further lateral movement within the network. The vulnerability's location within the drm_fw.c file indicates that it affects graphics or display-related firmware protection mechanisms, which may impact system stability and security of multimedia operations. This type of memory corruption vulnerability can also lead to system crashes or unexpected behavior, making it a serious concern for system reliability. Organizations should consider implementing immediate mitigations including kernel updates, input validation patches, and monitoring for suspicious privilege escalation attempts. The vulnerability's nature suggests that it may be exploitable through crafted firmware operations or memory manipulation techniques that target the specific buffer protection mechanisms within the device driver framework.