Listen to this Post
How CVE-2025-30471 Works
This vulnerability stems from improper input validation in Apple’s operating systems (visionOS, macOS, tvOS, iPadOS, iOS). A remote attacker can exploit this flaw by sending maliciously crafted data packets to a target device, triggering a resource exhaustion condition. The lack of proper bounds checking in network handling subsystems leads to uncontrolled memory consumption, crashing the system. Affected versions fail to sanitize input during TCP/IP stack processing, allowing repeated exploitation. Apple addressed this by implementing stricter validation in later updates.
DailyCVE Form
Platform: Apple Ecosystem
Version: visionOS <2.4, macOS <13.7.5
Vulnerability: DoS via input
Severity: Critical
Date: 04/04/2025
What Undercode Say:
Exploitation:
1. Craft malicious packets using Scapy:
from scapy.all import send(IP(dst="target_ip")/TCP(flags="X", options=[bash])
2. Flood target via UDP reflection:
hping3 --flood --udp --rand-source target_ip -p 53
Protection:
1. Apply Apple’s patches immediately.
2. Block anomalous TCP flags at firewall:
“`iptables -A INPUT -p tcp –tcp-flags ALL X -j DROP“`
3. Enable rate-limiting:
“`nft add rule ip filter input tcp dport 22 meter dos { ip saddr limit rate 5/minute } accept“`
Detection:
1. Monitor kernel logs for OOM events:
“`dmesg | grep “Out of memory”“`
2. Use Suricata rule:
“`alert tcp any any -> $HOME_NET any (flags:X; msg:”CVE-2025-30471 exploit attempt”; sid:10030471;)“`
Analytics:
- CVSS:4.0 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (9.1 Critical)
- Exploitability: High (No auth required)
- Affected ports: TCP/80, 443, 22; UDP/53, 123
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-30471
Extra Source Hub:
Undercode
