CVE-2018-4305 in watchOS
Summary
by MITRE
An input validation issue was addressed with improved input validation. This issue affected versions prior to iOS 12, tvOS 12, watchOS 5.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 08/22/2023
The vulnerability identified as CVE-2018-4305 represents a critical input validation flaw that impacted multiple Apple operating systems including iOS versions prior to 12, tvOS versions prior to 12, and watchOS versions prior to 5. This issue falls under the broader category of improper input validation vulnerabilities that have been consistently categorized by CWE as CWE-20, which specifically addresses "Improper Input Validation" in software systems. The vulnerability existed in the core input handling mechanisms of Apple's operating systems, creating potential attack vectors that could be exploited by malicious actors to manipulate system behavior through malformed inputs.
The technical nature of this vulnerability stems from insufficient validation of user-supplied data within the operating system's input processing pipelines. When applications or system components received input from various sources such as network communications, file parsing, or user interactions, the validation mechanisms failed to properly sanitize or verify the integrity of this data. This weakness allowed attackers to craft specially malformed inputs that could bypass normal security checks and potentially execute arbitrary code or cause unexpected system behavior. The vulnerability was particularly concerning because it affected fundamental system operations that are critical to maintaining the integrity and security of mobile and embedded devices.
The operational impact of CVE-2018-4305 extends beyond simple data corruption or system instability, as it provided potential pathways for privilege escalation attacks and arbitrary code execution. Attackers could exploit this vulnerability to gain elevated privileges within the operating system environment, potentially compromising the device's security posture and enabling further malicious activities. The affected platforms represent widely deployed consumer and enterprise devices that handle sensitive personal and corporate data, making this vulnerability particularly dangerous in real-world scenarios. The issue was addressed through improved input validation mechanisms that strengthened the sanitization and verification processes for all incoming data streams.
Apple's patch for this vulnerability aligns with recommended security practices outlined in the MITRE ATT&CK framework under the technique T1059, which covers command and scripting interpreter usage, as well as T1070, concerning indicator removal on host systems. The remediation involved implementing enhanced input validation routines that specifically target the identified weakness in data processing pathways. Organizations should prioritize updating affected systems to the latest available versions, as the patch addresses not only the immediate vulnerability but also strengthens overall system resilience against similar input-related attacks. The fix demonstrates the importance of continuous security monitoring and proactive patch management in maintaining secure operating environments across mobile and embedded platforms.