Overview
This blog post delves deep into the analysis of a newly discovered vulnerability, dubbed CVE-2025-43277, that affects various Apple operating systems. The vulnerability is particularly significant due to its wide reach, targeting multiple products including iOS, iPadOS, watchOS, macOS Sequoia, tvOS, and visionOS. This issue is related to memory handling, and its exploitation could lead to system compromise or data leakage. With the Common Vulnerability Scoring System (CVSS) score at 7.8, it is considered a high-severity vulnerability that requires immediate attention and mitigation.
Vulnerability Summary
CVE ID: CVE-2025-43277
Severity: High (7.8 CVSS Score)
Attack Vector: Remote
Privileges Required: None
User Interaction: Required
Impact: Memory corruption leading to potential system compromise or data leakage
Affected Products
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Product | Affected Versions
iOS | Before 18.6
iPadOS | Before 18.6
watchOS | Before 11.6
macOS Sequoia | Before 15.6
tvOS | Before 18.6
visionOS | Before 2.6
How the Exploit Works
This vulnerability arises due to improper memory handling while processing crafted audio files. An attacker can craft a malicious audio file that, when processed by the victim’s device, triggers a memory corruption issue. This could ultimately allow the attacker to execute arbitrary code or access sensitive information, potentially leading to full system compromise or data leakage.
Conceptual Example Code
Here’s a conceptual example of how the vulnerability might be exploited. The attacker sends a maliciously crafted audio file, which could be embedded in an innocent-looking application or website.
POST /upload/audiofile HTTP/1.1
Host: target.example.com
Content-Type: audio/mpeg
{ "audio_file": "malicious_audio_file.mp3" }In this HTTP request, the maliciously crafted audio file `malicious_audio_file.mp3` is sent to the endpoint that handles audio file uploads. Once the target system processes this file, it can potentially trigger the memory corruption vulnerability, leading to various impacts including system compromise or data leakage. It’s critical to apply the vendor’s patch or use WAF/IDS as temporary mitigation to protect against this vulnerability.
