CVE-2018-4140: Null Pointer Dereference
First published: Thu Mar 29 2018(Updated: )
Telephony. A null pointer dereference issue existed when handling Class 0 SMS messages. This issue was addressed with improved message validation.
Credit: @mjonsson Arjan van der Oest Voiceworks BV product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple iOS, iPadOS, and watchOS | <11.3 | 11.3 |
| iStyle @cosme iPhone OS | <11.3 |
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Reference Links
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2018-4177
- CVE-2018-4123
- CVE-2018-4155
- CVE-2018-4158
- CVE-2018-4142
- CVE-2018-4390
- CVE-2018-4391
- CVE-2018-4167
- CVE-2018-4168
- CVE-2018-4172
- CVE-2018-4151
- CVE-2018-4150
- CVE-2018-4104
- CVE-2018-4143
- CVE-2018-4185
- CVE-2017-15412
- CVE-2018-4187
- CVE-2018-4174
- CVE-2018-4166
- CVE-2018-4156
- CVE-2018-4157
- CVE-2018-4134
- CVE-2018-4137
- CVE-2018-4149
- CVE-2018-4144
- CVE-2018-4173
- CVE-2018-4154
- CVE-2018-4115
- CVE-2018-4140
- CVE-2018-4148
- CVE-2018-4110
- CVE-2018-4101
- CVE-2018-4114
- CVE-2018-4118
- CVE-2018-4119
- CVE-2018-4120
- CVE-2018-4121
- CVE-2018-4122
- CVE-2018-4125
- CVE-2018-4127
- CVE-2018-4128
- CVE-2018-4129
- CVE-2018-4130
- CVE-2018-4161
- CVE-2018-4162
- CVE-2018-4163
- CVE-2018-4165
- CVE-2018-4113
- CVE-2018-4146
- CVE-2018-4117
- CVE-2018-4207
- CVE-2018-4208
- CVE-2018-4209
- CVE-2018-4210
- CVE-2018-4212
- CVE-2018-4213
- CVE-2018-4145
- CVE-2018-4131
Frequently Asked Questions
What is CVE-2018-4140?
CVE-2018-4140 is a null pointer dereference vulnerability in certain Apple products, specifically iOS before 11.3.
How does CVE-2018-4140 affect Apple iOS?
CVE-2018-4140 allows remote attackers to cause a denial of service (NULL pointer dereference and reboot) via a Class 0 SMS message.
What is the severity of CVE-2018-4140?
CVE-2018-4140 has a severity rating of 7.5 (high).
How can I fix CVE-2018-4140?
To fix CVE-2018-4140, update your iOS version to 11.3 or newer.
Where can I find more information about CVE-2018-4140?
You can find more information about CVE-2018-4140 on the following websites: [SecurityFocus](http://www.securityfocus.com/bid/103578), [SecurityTracker](http://www.securitytracker.com/id/1040604), and [Apple Support](https://support.apple.com/HT208693)
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