CVE-2018-4221: Infoleak
First published: Fri Jun 01 2018(Updated: )
Security. An issue existed in the handling of S-MIME certificates. This issue was addressed with improved validation of S-MIME certificates.
Credit: Damian Poddebniak MChristian Dresen MJens Müller Ruhr University BochumFabian Ising MSebastian Schinzel MSimon Friedberger KU LeuvenJuraj Somorovsky Ruhr University BochumJörg Schwenk Ruhr University Bochum product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple iPhone OS | <11.4 | |
| Apple Mac OS X | <10.13.5 | |
| Apple macOS High Sierra | <10.13.5 | 10.13.5 |
| Apple Sierra | ||
| Apple El Capitan |
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Reference Links
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2018-4196
- CVE-2018-4253
- CVE-2018-4256
- CVE-2018-4255
- CVE-2018-4254
- CVE-2018-4258
- CVE-2018-4257
- CVE-2018-7584
- CVE-2018-4219
- CVE-2018-5383
- CVE-2018-4171
- CVE-2018-4194
- CVE-2018-4180
- CVE-2018-4181
- CVE-2018-4182
- CVE-2018-4183
- CVE-2018-4478
- CVE-2018-4251
- CVE-2018-4211
- CVE-2018-4229
- CVE-2018-4159
- CVE-2018-4242
- CVE-2018-4202
- CVE-2018-4217
- CVE-2018-4141
- CVE-2018-4228
- CVE-2018-4236
- CVE-2018-4234
- CVE-2018-4249
- CVE-2018-8897
- CVE-2018-4241
- CVE-2018-4243
- CVE-2018-4237
- CVE-2018-4404
- CVE-2018-4227
- CVE-2018-4235
- CVE-2018-4240
- CVE-2018-4230
- CVE-2018-4221
- CVE-2018-4223
- CVE-2018-4224
- CVE-2018-4225
- CVE-2018-4226
- CVE-2018-4184
- CVE-2018-4198
- CVE-2018-4193
Frequently Asked Questions
What is CVE-2018-4221?
CVE-2018-4221 is a vulnerability that affects certain Apple products including iOS before 11.4 and macOS before 10.13.5.
What is the severity of CVE-2018-4221?
The severity of CVE-2018-4221 is rated as high with a CVSS score of 7.5.
How does CVE-2018-4221 work?
CVE-2018-4221 allows web sites to track users by exploiting the transmission of S/MIME client certificates.
How can I check if I am affected by CVE-2018-4221?
If you are using iOS before 11.4 or macOS before 10.13.5, you may be affected by CVE-2018-4221.
Is there a fix for CVE-2018-4221?
Yes, the issue has been addressed in iOS 11.4 and macOS 10.13.5. It is recommended to update to the latest version to fix the vulnerability.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- collector/apple-support
- agent/software-canonical-lookup-request
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- agent/trending
- vendor/apple
- canonical/apple iphone os
- canonical/apple mac os x
- canonical/apple macos high sierra
- canonical/apple sierra
- canonical/apple el capitan