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 found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz product-security@apple.com product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple Safari | <12 | 12 |
| Apple iCloud for Windows | <7.7 | 7.7 |
| Apple iTunes for Windows | <12.9 | 12.9 |
| Apple watchOS | <5 | 5 |
| Apple tvOS | <12 | 12 |
| Apple iOS | <12 | 12 |
| Apple Safari | <12 | |
| Apple iPhone OS | <12.0 | |
| Apple tvOS | <12 | |
| Apple watchOS | <5.0 | |
| Apple iCloud | <7.7 | |
| Apple iTunes | <12.9 | |
| Microsoft Windows | ||
| All of | ||
| Any of | ||
| Apple iCloud | <7.7 | |
| Apple iTunes | <12.9 | |
| Microsoft Windows | ||
| 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 |
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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-2018-4307
- CVE-2018-4329
- CVE-2018-4195
- CVE-2018-4319
- CVE-2018-4191
- CVE-2018-4309
- CVE-2018-4299
- CVE-2018-4323
- CVE-2018-4328
- CVE-2018-4358
- CVE-2018-4359
- CVE-2018-4360
- CVE-2018-4311
- CVE-2018-4345
- CVE-2018-4361
- CVE-2018-4474
- CVE-2018-4312
- CVE-2018-4315
- CVE-2018-4197
- CVE-2018-4314
- CVE-2018-4318
- CVE-2018-4306
- CVE-2018-4317
- CVE-2018-4316
- CVE-2018-4126
- CVE-2018-4414
- CVE-2018-4412
- 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-2018-4363
- CVE-2018-4336
- CVE-2018-4337
- CVE-2018-4340
- CVE-2018-4344
- CVE-2018-4425
- CVE-2018-4399
- CVE-2018-4407
- CVE-2018-4313
- CVE-2016-1777
- CVE-2018-4395
- CVE-2018-4203
- CVE-2018-4304
- CVE-2018-4321
- CVE-2018-5383
- 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.
- collector/apple-support
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/software-canonical-lookup-request
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/description
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- collector/nvd-index
- collector/nvd-cve
- source/NVD
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- collector/usn-cve
- source/Ubuntu
- vendor/apple
- canonical/apple safari
- canonical/apple icloud for windows
- canonical/apple itunes for windows
- canonical/apple watchos
- canonical/apple tvos
- canonical/apple ios
- package-manager/debian
- canonical/apple iphone os
- canonical/apple icloud
- canonical/apple itunes
- vendor/microsoft
- canonical/microsoft windows
- package-manager/ubuntu