CVE-2018-4121: Buffer Overflow
WebKit. Multiple memory corruption issues were addressed with improved memory handling.
Other sources
An issue was discovered in certain Apple products. iOS before 11.3 is affected. Safari before 11.1 is affected. iCloud before 7.4 on Windows is affected. iTunes before 12.7.4 on Windows is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
Credit
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2018-4155
- CVE-2018-4142
- CVE-2018-4167
- CVE-2018-4150
- CVE-2018-4104
- CVE-2018-4143
- CVE-2018-4185
- CVE-2017-15412
- CVE-2018-4166
- CVE-2018-4157
- CVE-2018-4144
- CVE-2018-4115
- CVE-2018-4113
- CVE-2018-4146
- 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-2018-4207
- CVE-2018-4208
- CVE-2018-4209
- CVE-2018-4210
- CVE-2018-4212
- CVE-2018-4213
- CVE-2018-4145
- CVE-2018-4158
- CVE-2018-4390
- CVE-2018-4391
- CVE-2018-4117
- CVE-2018-4102
- CVE-2018-4116
- CVE-2018-4186
- CVE-2018-4137
- CVE-2018-4133
- CVE-2018-4177
- CVE-2018-4123
- CVE-2018-4168
- CVE-2018-4172
- CVE-2018-4151
- CVE-2018-4187
- CVE-2018-4174
- CVE-2018-4156
- CVE-2018-4134
- CVE-2018-4149
- CVE-2018-4173
- CVE-2018-4154
- CVE-2018-4140
- CVE-2018-4148
- CVE-2018-4110
- CVE-2018-4131
Frequently Asked Questions
What is CVE-2018-4121?
CVE-2018-4121 is a vulnerability in certain Apple products that allows for multiple memory corruption issues due to improved memory handling.
Which Apple products are affected by CVE-2018-4121?
The following Apple products are affected by CVE-2018-4121: iOS before 11.3, Safari before 11.1, iCloud before 7.4 on Windows, iTunes before 12.7.4 on Windows, tvOS before 11.3, and watchOS before 4.3.
What is the severity of CVE-2018-4121?
The severity of CVE-2018-4121 is high, with a severity score of 8.8.
How can I fix CVE-2018-4121?
To fix CVE-2018-4121, update to the latest versions of the affected Apple products: iOS 11.3 or later, Safari 11.1 or later, iCloud 7.4 or later on Windows, iTunes 12.7.4 or later on Windows, tvOS 11.3 or later, and watchOS 4.3 or later.
Where can I find more information about CVE-2018-4121?
You can find more information about CVE-2018-4121 on the following references: [SecurityTracker](http://www.securitytracker.com/id/1040604), [GitHub](https://github.com/mwrlabs/CVE-2018-4121), [Gentoo security advisory](https://security.gentoo.org/glsa/201808-04).