CVE-2014-1357 in iOS
Summary
by MITRE
Heap-based buffer overflow in launchd in Apple iOS before 7.1.2, Apple OS X before 10.9.4, and Apple TV before 6.1.2 allows attackers to execute arbitrary code via a crafted application that generates log messages.
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Analysis
by VulDB Data Team • 02/08/2022
The vulnerability identified as CVE-2014-1357 represents a critical heap-based buffer overflow within launchd, a fundamental system component in Apple's operating systems. This flaw exists in versions of iOS prior to 7.1.2, OS X prior to 10.9.4, and Apple TV prior to 6.1.2, making it a widespread issue affecting multiple Apple platforms. The vulnerability stems from inadequate input validation within the logging mechanism of launchd, which processes and handles log messages generated by applications. When a malicious application creates log messages that exceed the allocated buffer space, the overflow occurs in the heap memory region, potentially allowing attackers to overwrite adjacent memory locations and manipulate program execution flow.
The technical exploitation of this vulnerability leverages the inherent design flaw in how launchd manages memory allocation for log message processing. Specifically, when applications generate log messages that surpass the predetermined buffer limits, the heap-based overflow enables attackers to inject and execute arbitrary code with the privileges of the launchd process. This represents a severe privilege escalation vector since launchd operates with elevated system privileges and is responsible for managing system services and processes. The vulnerability is classified under CWE-121 as a heap-based buffer overflow, which occurs when a program writes data beyond the boundaries of a heap-allocated buffer, potentially corrupting adjacent memory and enabling code execution.
The operational impact of CVE-2014-1357 extends beyond simple code execution, as it provides attackers with a means to compromise entire operating systems through seemingly benign application behavior. The vulnerability is particularly dangerous because it requires no user interaction or special privileges to exploit, making it highly suitable for automated attacks. Attackers can craft malicious applications that generate oversized log messages, triggering the buffer overflow condition and subsequently executing malicious payloads. This vulnerability aligns with ATT&CK technique T1059.003 for command and scripting interpreter, as it enables arbitrary code execution that can be used to establish persistent access or escalate privileges. The flaw's exploitation demonstrates the critical importance of input validation in system-level components, as even legitimate logging operations can become attack vectors when proper bounds checking is absent.
Mitigation strategies for CVE-2014-1357 primarily focus on applying the official security patches released by Apple, which include updated versions of iOS, OS X, and Apple TV firmware that address the heap overflow condition. System administrators should prioritize immediate deployment of these updates across all affected platforms to prevent exploitation. Additionally, implementing application sandboxing and restricting the ability of applications to generate excessive log messages can provide additional protective layers. Network monitoring solutions should be configured to detect unusual logging patterns that might indicate exploitation attempts, while security teams should maintain awareness of the specific attack signatures associated with this vulnerability. The remediation process should include comprehensive testing of patched systems to ensure that the vulnerability has been fully addressed without introducing compatibility issues with existing applications or system services.