CVE-2017-2499 in Safari
Summary
by MITRE
An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. tvOS before 10.2.1 is affected. The issue involves the "WebKit Web Inspector" component. It allows attackers to execute arbitrary unsigned code or cause a denial of service (memory corruption) via a crafted app.
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Analysis
by VulDB Data Team • 08/25/2024
The vulnerability identified as CVE-2017-2499 represents a critical security flaw within Apple's WebKit Web Inspector component that affected multiple Apple operating systems including iOS versions prior to 10.3.2 Safari versions before 10.1.1 and tvOS versions before 10.2.1. This issue stems from improper handling of memory management within the Web Inspector functionality which is typically used for debugging web content and applications. The flaw exists in the way the WebKit engine processes certain crafted input within the inspector interface, creating potential attack vectors that could be exploited by malicious actors.
The technical nature of this vulnerability manifests through memory corruption issues that occur when the Web Inspector component processes specially crafted applications or web content. Attackers can leverage this weakness to execute arbitrary unsigned code on affected devices, effectively bypassing security mechanisms that normally prevent unauthorized software execution. This memory corruption vulnerability falls under the category of heap-based buffer overflows and memory corruption flaws as classified by CWE-122 and CWE-125 respectively. The exploitation occurs when the Web Inspector component fails to properly validate input data from malicious applications, leading to unpredictable memory state changes that can be manipulated to achieve code execution.
The operational impact of CVE-2017-2499 extends beyond simple denial of service scenarios as it provides attackers with the capability to gain unauthorized code execution privileges on affected Apple devices. This vulnerability could be particularly dangerous in environments where iOS devices are used for sensitive operations or contain confidential data. The attack surface is broad since the Web Inspector component is accessible through various Apple applications including Safari and the iOS operating system itself. Security researchers have noted that this vulnerability could be exploited through malicious web pages or applications that specifically target the Web Inspector functionality, making it a significant concern for enterprise users and individuals who frequently access untrusted web content.
Mitigation strategies for this vulnerability primarily focus on immediate system updates to the patched versions of Apple iOS, Safari, and tvOS operating systems. Apple released security updates that addressed the memory corruption issues within the WebKit Web Inspector component through improved input validation and memory management practices. Organizations should implement comprehensive patch management procedures to ensure all affected devices receive the necessary updates promptly. Additionally, network administrators can consider implementing web filtering solutions that block access to suspicious domains and content that may contain malicious applications designed to exploit this vulnerability. The ATT&CK framework categorizes this type of vulnerability under privilege escalation and code execution techniques, highlighting the need for layered security approaches that include endpoint protection, network monitoring, and user education to prevent successful exploitation attempts.