CVE-2022-2587 in Chrome OS
Summary
by MITRE • 08/13/2022
Out of bounds write in Chrome OS Audio Server in Google Chrome on Chrome OS prior to 102.0.5005.125 allowed a remote attacker to potentially exploit heap corruption via crafted audio metadata.
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Analysis
by VulDB Data Team • 09/11/2022
The vulnerability identified as CVE-2022-2587 represents a critical out-of-bounds write flaw within the Chrome OS Audio Server component of Google Chrome operating on Chrome OS devices. This issue affects systems running Chrome OS versions prior to 102.0.5005.125, where the audio server processing logic fails to properly validate audio metadata inputs. The flaw manifests when the system encounters crafted audio metadata that triggers an improper memory write operation beyond the allocated buffer boundaries. Such buffer overflows typically occur when input validation mechanisms are insufficient to handle malformed or maliciously constructed data, creating opportunities for attackers to manipulate memory layout and potentially execute arbitrary code.
The technical exploitation of this vulnerability leverages the inherent characteristics of heap-based memory corruption, where the audio server's memory management routines fail to enforce proper bounds checking during metadata processing. When legitimate audio files contain specially crafted metadata structures, the system's audio processing pipeline attempts to write data beyond allocated memory segments, potentially overwriting adjacent heap memory regions. This type of vulnerability aligns with CWE-787, which specifically addresses out-of-bounds write conditions in software systems. The attack surface is particularly concerning given that Chrome OS devices are commonly deployed in enterprise environments where audio processing is frequently utilized, making the exploitation vector more accessible to remote attackers who can potentially leverage this flaw in network-based attacks.
From an operational impact perspective, successful exploitation of CVE-2022-2587 could enable remote attackers to achieve arbitrary code execution within the Chrome OS audio processing context, potentially leading to full system compromise. The vulnerability's remote exploitability means that attackers do not require physical access to devices, making it particularly dangerous for organizations deploying Chrome OS devices in both corporate and educational settings. The heap corruption aspect of this vulnerability provides attackers with opportunities for privilege escalation and persistent access, as the compromised audio server process typically operates with elevated privileges. This flaw can be categorized under ATT&CK technique T1059.007 for command and scripting interpreter, where successful exploitation could allow attackers to execute malicious payloads through compromised audio processing pathways.
The remediation strategy for this vulnerability primarily involves updating Chrome OS systems to version 102.0.5005.125 or later, which includes patches addressing the buffer overflow conditions in the audio server component. Organizations should prioritize immediate deployment of these security updates across all affected Chrome OS devices, particularly those in high-risk environments such as financial institutions, government agencies, or critical infrastructure sectors. Additionally, implementing network segmentation and monitoring for unusual audio processing activities can provide early detection of potential exploitation attempts. Security teams should also consider deploying application whitelisting policies that restrict execution of unauthorized audio processing components, as well as regular vulnerability assessments to identify similar buffer overflow conditions in other system components. The patch addresses the root cause by implementing proper input validation and bounds checking mechanisms within the audio metadata parsing routines, ensuring that all memory write operations remain within allocated buffer boundaries.