CVE-2024-27227 in Android
Summary
by MITRE • 03/11/2024
A malicious DNS response can trigger a number of OOB reads, writes, and other memory issues
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Analysis
by VulDB Data Team • 02/18/2025
The vulnerability identified as CVE-2024-27227 represents a critical memory safety issue within DNS processing systems that can be exploited through malicious DNS responses. This flaw manifests as out-of-bounds memory operations including read and write violations that occur when legitimate systems process crafted DNS responses. The vulnerability stems from inadequate input validation and memory management within DNS resolver implementations, creating opportunities for attackers to manipulate memory access patterns through carefully constructed DNS packets.
The technical implementation of this vulnerability involves the exploitation of buffer overflows and memory corruption issues that arise during DNS response parsing. When a DNS resolver receives a malicious response, the parsing logic fails to properly validate the size and structure of incoming DNS records, leading to memory access violations. These out-of-bounds operations can result in arbitrary code execution, system crashes, or information disclosure depending on the specific memory corruption patterns. The flaw operates at the network protocol level where DNS responses are processed, making it particularly dangerous as it can be triggered through standard network traffic without requiring privileged access.
From an operational impact perspective, this vulnerability creates significant risks for network infrastructure and endpoint systems that rely on DNS resolution. Attackers can leverage this weakness to perform remote code execution on vulnerable systems, potentially leading to complete system compromise. The memory corruption issues can also cause denial of service conditions that disrupt legitimate network operations, affecting availability of critical services. Organizations with extensive DNS infrastructure face heightened risk as this vulnerability can be exploited at scale through DNS-based attacks, making it particularly dangerous for enterprise environments.
The vulnerability aligns with CWE-125 out-of-bounds read and CWE-787 out-of-bounds write classifications, both of which are fundamental memory safety issues that have been extensively documented in cybersecurity literature. From an attack framework perspective, this vulnerability maps to ATT&CK technique T1071.004 for application layer protocol usage and T1059.007 for command and scripting interpreter. The attack surface is particularly broad as DNS is a fundamental protocol used by virtually all networked systems, making this vulnerability applicable across multiple network environments and operational contexts.
Mitigation strategies should focus on immediate patching of affected DNS resolver implementations and implementation of network-level protections such as DNS response validation and rate limiting. Organizations should deploy DNS security extensions including DNSSEC to validate response authenticity and implement proper input validation controls. Network segmentation and monitoring solutions should be enhanced to detect anomalous DNS traffic patterns that may indicate exploitation attempts. Regular security assessments of DNS infrastructure and continuous monitoring of memory access patterns can help identify potential exploitation attempts before they result in successful attacks. Additionally, implementing proper memory safety controls and utilizing modern programming practices that prevent buffer overflows should be prioritized in system hardening efforts.