CVE-2018-4191: Buffer Overflow
First published: Wed Sep 12 2018(Updated: )
A memory corruption issue was addressed with improved validation. This issue affected versions prior to iOS 12, tvOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.
Credit: found by OSS-Fuzz product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/webkit2gtk | <2.22.2-0ubuntu0.18.04.1 | 2.22.2-0ubuntu0.18.04.1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.2-1ubuntu1 | 2.22.2-1ubuntu1 |
| ubuntu/webkit2gtk | <2.22.0 | 2.22.0 |
| debian/webkit2gtk | 2.44.2-1~deb11u1 2.44.2-1~deb12u1 2.44.2-1 | |
| tvOS | <12 | 12 |
| Apple iOS, iPadOS, and watchOS | <5 | 5 |
| Apple iCloud | <7.7 | 7.7 |
| iTunes | <12.9 | 12.9 |
| Safari | <12 | 12 |
| Apple iOS and iPadOS | <12 | 12 |
| Safari | <12 | |
| iPhone OS | <12.0 | |
| tvOS | <12 | |
| Apple iOS, iPadOS, and watchOS | <5.0 | |
| All of | ||
| Any of | ||
| iCloud | <7.7 | |
| iTunes | <12.9 | |
| Microsoft Windows Operating System | ||
| iCloud | <7.7 | |
| iTunes | <12.9 | |
| Microsoft Windows Operating System |
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Reference Links
- https://support.apple.com/en-us/HT209109 (Advisory)
- https://support.apple.com/en-us/HT209141 (Advisory)
- https://support.apple.com/en-us/HT209140 (Advisory)
- https://support.apple.com/kb/HT209106
- https://support.apple.com/kb/HT209107
- https://support.apple.com/kb/HT209108
- https://support.apple.com/kb/HT209109
- https://support.apple.com/kb/HT209140
- https://support.apple.com/kb/HT209141
- https://launchpad.net/bugs/cve/CVE-2018-4191
- https://support.apple.com/en-us/HT209108 (Advisory)
- https://support.apple.com/en-us/HT209107 (Advisory)
- https://support.apple.com/en-us/HT209106 (Advisory)
- https://webkitgtk.org/security/WSA-2018-0007.html
- https://security-tracker.debian.org/tracker/CVE-2018-4191
- https://www.openwall.com/lists/oss-security/2018/09/29/1
- https://ubuntu.com/security/notices/USN-3781-1
- https://www.cve.org/CVERecord?id=CVE-2018-4191
- https://nvd.nist.gov/vuln/detail/CVE-2018-4191
- https://ubuntu.com/security/CVE-2018-4191
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2018-4321
- CVE-2018-5383
- CVE-2018-4126
- CVE-2018-4412
- CVE-2018-4414
- CVE-2018-4347
- CVE-2018-4433
- CVE-2018-4426
- CVE-2018-4331
- CVE-2018-4332
- CVE-2018-4343
- CVE-2018-4408
- CVE-2018-4341
- CVE-2018-4354
- CVE-2018-4383
- CVE-2018-4401
- CVE-2018-4305
- CVE-2018-4399
- CVE-2018-4407
- CVE-2018-4363
- CVE-2018-4336
- CVE-2018-4337
- CVE-2018-4340
- CVE-2018-4344
- CVE-2018-4425
- CVE-2018-4313
- CVE-2016-1777
- CVE-2018-4395
- CVE-2018-4203
- CVE-2018-4304
- CVE-2018-4316
- CVE-2018-4345
- CVE-2018-4191
- CVE-2018-4299
- CVE-2018-4359
- CVE-2018-4323
- CVE-2018-4358
- CVE-2018-4328
- CVE-2018-4197
- CVE-2018-4318
- CVE-2018-4306
- CVE-2018-4312
- CVE-2018-4314
- CVE-2018-4315
- CVE-2018-4317
- CVE-2018-4309
- CVE-2018-4361
- CVE-2018-4474
- CVE-2018-4360
- CVE-2018-4319
- CVE-2018-4311
- CVE-2018-4307
- CVE-2018-4329
- CVE-2018-4195
- CVE-2018-4322
- CVE-2018-4356
- CVE-2018-4333
- CVE-2018-4355
- CVE-2018-4335
- CVE-2018-4326
- CVE-2018-4310
- CVE-2018-4352
- CVE-2018-4362
- CVE-2018-4325
Frequently Asked Questions
What is CVE-2018-4191?
CVE-2018-4191 is a memory corruption issue in WebKit that has been addressed with improved validation.
Which software versions are affected by CVE-2018-4191?
Versions prior to iOS 12, tvOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, and iCloud for Windows 7.7 are affected by CVE-2018-4191.
What is the severity of CVE-2018-4191?
CVE-2018-4191 has a severity rating of 8.8 (High).
How can I fix CVE-2018-4191?
To fix CVE-2018-4191, update to the latest version of iOS, tvOS, watchOS, Safari, iTunes, and iCloud for Windows as recommended by Apple.
Where can I find more information about CVE-2018-4191?
You can find more information about CVE-2018-4191 on the Apple support website.
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