How CVE-2025-24182 Works
This vulnerability arises due to improper input validation when processing malicious font files. Attackers can craft a specially designed font that triggers an out-of-bounds read when parsed by the affected operating systems (visionOS, iOS, iPadOS, tvOS, macOS). By exploiting this flaw, an attacker can leak sensitive process memory contents, potentially exposing encryption keys, session tokens, or other confidential data. The issue is fixed in visionOS 2.4, iOS 18.4, iPadOS 18.4, tvOS 18.4, and macOS Sequoia 15.4.
DailyCVE Form
Platform: Apple OS stack
Version: Pre-visionOS 2.4
Vulnerability: Out-of-bounds read
Severity: Critical
Date: 04/07/2025
What Undercode Say:
Exploitation Analysis:
- Malicious Font Crafting – Attackers embed payloads in font files (e.g., TTF/OTF).
- Memory Leak Trigger – When processed, the OS reads beyond allocated memory bounds.
- Data Exfiltration – Sensitive heap memory is exposed to the attacker.
Proof-of-Concept (PoC) Snippet:
// Simulated vulnerable font parsing
void parse_font(char font_data) {
int size = ((int)font_data);
char buffer = malloc(size);
memcpy(buffer, font_data, size); // OOB read if size is manipulated
}
Detection & Mitigation:
1. Patch Check:
sw_vers macOS system_profiler SPSoftwareDataType | grep "System Version"
2. Block Suspicious Fonts:
sudo chmod 000 /Library/Fonts/MaliciousFont.ttf
3. Memory Protection: Enable OS-level mitigations (ASLR, XN).
Exploit Command (Hypothetical):
python3 exploit.py --target-ip 192.168.1.100 --font exploit_font.ttf
Defensive Measures:
- Apply Apple’s security updates immediately.
- Restrict font installation to trusted sources.
- Monitor for abnormal memory access in font-related processes.
References:
- Apple Security Advisory: HT202525
- NVD Entry: CVE-2025-24182
End of Report
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-24182
Extra Source Hub:
Undercode
