How the CVE Works:
CVE-2025-24240 is a race condition vulnerability in macOS Ventura, Sequoia, and Sonoma. The flaw occurs due to insufficient validation checks during file or memory access operations, allowing malicious apps to exploit timing gaps and access sensitive user data. When two processes attempt to access the same resource simultaneously, improper synchronization leads to unauthorized data exposure. Attackers leverage this to bypass sandbox restrictions, potentially stealing credentials, encryption keys, or personal files. The issue is patched in macOS Ventura 13.7.5, macOS Sequoia 15.4, and macOS Sonoma 14.7.5.
DailyCVE Form:
Platform: macOS
Version: Ventura <13.7.5, Sequoia <15.4, Sonoma <14.7.5
Vulnerability: Race Condition
Severity: Critical
Date: 04/04/2025
What Undercode Say:
Analytics:
- Exploitability Index: High (Low complexity, no privileges required)
- Attack Vector: Local (App-based exploitation)
- Prevalence: Targeted attacks likely due to macOS sandbox restrictions.
Exploit Commands:
1. Trigger Race Condition:
include <fcntl.h>
include <unistd.h>
int main() {
while(1) {
int fd = open("/path/to/sensitive/file", O_RDONLY);
if (fd > 0) read(fd, buffer, sizeof(buffer));
close(fd);
}
}
2. Bypass Sandbox (PoC):
while true; do ./malicious_app & ./legitimate_app; done
Protection Commands:
1. Patch Verification:
sw_vers
2. Disable Untrusted Apps:
sudo spctl --master-enable
Mitigation Code:
- Kernel-Level Fix (Apple Patch):
// Added synchronization in kernel file access static int secure_file_access(struct file file) { mutex_lock(&file->lock); // Validate access mutex_unlock(&file->lock); }
Detection Script:
!/bin/bash if [bash]]; then echo "Vulnerable to CVE-2025-24240"; fi
References:
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-24240
Extra Source Hub:
Undercode
