CVE-2018-4312: Use After Free
First published: Wed Sep 12 2018(Updated: )
A use after free issue was addressed with improved memory management. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.
Credit: Ivan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project ZeroIvan Fratric Google Project Zero product-security@apple.com product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple iCloud for Windows | <7.7 | 7.7 |
| Apple iTunes for Windows | <12.9 | 12.9 |
| Apple Safari | <12 | 12 |
| Apple tvOS | <12 | 12 |
| Apple iOS | <12 | 12 |
| Apple Safari | <12 | |
| Apple iPhone OS | <12.0 | |
| Apple tvOS | <12 | |
| All of | ||
| Any of | ||
| Apple iCloud | <7.7 | |
| Apple iTunes | <12.9 | |
| Microsoft Windows | ||
| 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/HT209141 (Advisory)
- https://support.apple.com/en-us/HT209140 (Advisory)
- https://support.apple.com/en-us/HT209109 (Advisory)
- https://support.apple.com/kb/HT209106
- https://support.apple.com/kb/HT209107
- https://support.apple.com/kb/HT209109
- https://support.apple.com/kb/HT209140
- https://support.apple.com/kb/HT209141
- https://launchpad.net/bugs/cve/CVE-2018-4312
- 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-2018-4312
- 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-2018-4312
- https://nvd.nist.gov/vuln/detail/CVE-2018-4312
- https://ubuntu.com/security/CVE-2018-4312
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2018-4126
- CVE-2018-4414
- CVE-2018-4412
- CVE-2018-4347
- CVE-2018-4191
- CVE-2018-4311
- CVE-2018-4316
- CVE-2018-4299
- CVE-2018-4323
- CVE-2018-4328
- CVE-2018-4358
- CVE-2018-4359
- CVE-2018-4360
- CVE-2018-4319
- CVE-2018-4309
- CVE-2018-4197
- CVE-2018-4306
- CVE-2018-4312
- CVE-2018-4314
- CVE-2018-4315
- CVE-2018-4317
- CVE-2018-4318
- CVE-2018-4345
- CVE-2018-4361
- CVE-2018-4474
- CVE-2018-4307
- CVE-2018-4329
- CVE-2018-4195
- CVE-2018-4321
- CVE-2018-5383
- 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-2018-4322
- 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-2018-4312?
CVE-2018-4312 is a use after free vulnerability in WebKit that has been fixed with improved memory management.
Which software versions are affected by CVE-2018-4312?
Versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, and iCloud for Windows 7.7 are affected by CVE-2018-4312.
What is the severity of CVE-2018-4312?
CVE-2018-4312 has a severity rating of 8.8 (high).
How do I fix CVE-2018-4312?
To fix CVE-2018-4312, update to the latest version of iOS, tvOS, Safari, iTunes for Windows, or iCloud for Windows, as provided by the vendors.
Where can I find more information about CVE-2018-4312?
More information about CVE-2018-4312 can be found at the following references: [Link 1](https://support.apple.com/kb/HT209106), [Link 2](https://support.apple.com/kb/HT209107), [Link 3](https://support.apple.com/kb/HT209109).
- collector/apple-support
- alias/CVE-2018-4306
- alias/CVE-2018-4312
- alias/CVE-2018-4314
- alias/CVE-2018-4315
- alias/CVE-2018-4317
- alias/CVE-2018-4318
- alias/CVE-2018-4197
- collector/launchpad-cve
- source/Launchpad
- agent/type
- agent/software-canonical-lookup-request
- agent/first-publish-date
- agent/severity
- agent/weakness
- agent/author
- agent/description
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- collector/nvd-index
- collector/usn-cve
- source/Ubuntu
- agent/references
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- agent/trending
- vendor/apple
- canonical/apple icloud for windows
- canonical/apple itunes for windows
- canonical/apple safari
- canonical/apple tvos
- canonical/apple ios
- canonical/apple iphone os
- canonical/apple icloud
- canonical/apple itunes
- vendor/microsoft
- canonical/microsoft windows
- package-manager/ubuntu
- package-manager/debian