CVE-2018-4318
published 2019-04-03CVE-2018-4318: 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…
PriorityP261high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EXPLOIT
EPSS
9.35%
94.9th percentile
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | icloud | < 7.7 | 7.7 |
| apple | icloud_for_windows | — | — |
| apple | ios | — | — |
| apple | iphone_os | < 12.0 | 12.0 |
| apple | itunes | < 12.9 | 12.9 |
| apple | itunes_12.9_for_windows | — | — |
| apple | safari | < 12 | 12 |
| apple | safari | — | — |
| apple | tvos | < 12 | 12 |
| apple | tvos | — | — |
| debian | webkit2gtk | < webkit2gtk 2.22.0-2 (bookworm) | webkit2gtk 2.22.0-2 (bookworm) |
Detection & IOCsextracted from sources · hover to see the quote
- →The UAF is triggered in WebCore::SVGTextLayoutAttributes::context during SVG text layout; monitor for crashes or heap corruption in WebCore's SVG text rendering pipeline (RenderSVGText::layout → SVGRenderSupport::layoutChildren). ↗
- →Exploit PoC uses SVG-related HTML elements (tref, feMerge, title) combined with CSS float and getSVGDocument() JS call to trigger the UAF; detect pages combining SVG element manipulation with getSVGDocument() and DOM replacement (replaceWith) in close proximity. ↗
- →The crash occurs in the WebContent XPC process (com.apple.WebKit.WebContent); monitor for abnormal termination of this process when processing web content containing SVG text elements. ↗
- →Impact is arbitrary code execution via processing maliciously crafted web content; treat any WebKit crash in RenderSVGText::layout or SVGTextLayoutAttributes as high-severity. ↗
- ·Affected versions are iOS prior to 12, tvOS prior to 12, Safari prior to 12, iTunes prior to 12.9 for Windows, and iCloud for Windows prior to 7.7; patched in those releases. ↗
- ·On Debian-based Linux systems (webkit2gtk), the vulnerability is resolved in version 2.22.0-2 across all tracked suites. ↗
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8LOW
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GHSA
GHSA-3pgh-gc83-p85w: A use after free issue was addressed with improved memory management
ghsa_unreviewed·2022-05-14
CVE-2018-4318 [HIGH] CWE-416 GHSA-3pgh-gc83-p85w: A use after free issue was addressed with improved memory management
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.
OSV
CVE-2018-4318: A use after free issue was addressed with improved memory management
osv·2019-04-03·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: A use after free issue was addressed with improved memory management
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.
Project0
365 Days Later: Finding and Exploiting Safari Bugs using Publicly Available Tools - Project Zero
project_zero·2018-10-01
CVE-2018-4197 365 Days Later: Finding and Exploiting Safari Bugs using Publicly Available Tools - Project Zero
Posted by Ivan Fratric, Google Project Zero
Around a year ago, we published the results of research about the resilience of modern browsers against DOM fuzzing, a well-known technique for finding browser bugs. Together with the bug statistics we also published Domato, our DOM fuzzing tool that was used to find those bugs.
Given that in the previous research, Apple Safari, or more specifically, WebKit (its DOM engine) did noticeably worse than other browsers, we decided to revisit it after a year using exactly the same methodology and exactly the same tools to see whether anything changed.
Test Setup
As in the original research, the fuzzing was initially done against WebKitGTK+ and then all the crashes were tested against Apple Safari running on a Mac. This makes the fuzzing setup e
Apple
CVE-2018-4318: iCloud for Windows 7.7
vendor_apple·2018-10-08·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: iCloud for Windows 7.7
Apple Security Update: About the security content of iCloud for Windows 7.7
Product: iCloud for Windows
Version: 7.7
CVE: CVE-2018-4318
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
Ubuntu
WebKitGTK+ vulnerabilities
vendor_ubuntu·2018-10-03
CVE-2018-4191 WebKitGTK+ vulnerabilities
Title: WebKitGTK+ vulnerabilities
Summary: Several security issues were fixed in WebKitGTK+.
A large number of security issues were discovered in the WebKitGTK+ Web and
JavaScript engines. If a user were tricked into viewing a malicious
website, a remote attacker could exploit a variety of issues related to web
browser security, including cross-site scripting attacks, denial of service
attacks, and arbitrary code execution.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK+, such as Epiphany, to make all the necessary changes.
Apple
CVE-2018-4318: tvOS 12
vendor_apple·2018-09-17·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: tvOS 12
Apple Security Update: About the security content of tvOS 12
Product: tvOS
Version: 12
CVE: CVE-2018-4318
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
Apple
CVE-2018-4318: iOS 12
vendor_apple·2018-09-17·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: iOS 12
Apple Security Update: About the security content of iOS 12
Product: iOS
Version: 12
CVE: CVE-2018-4318
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
Apple
CVE-2018-4318: Safari 12
vendor_apple·2018-09-17·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: Safari 12
Apple Security Update: About the security content of Safari 12
Product: Safari
Version: 12
CVE: CVE-2018-4318
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
Apple
CVE-2018-4318: iTunes 12.9 for Windows
vendor_apple·2018-09-12·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: iTunes 12.9 for Windows
Apple Security Update: About the security content of iTunes 12.9 for Windows
Product: iTunes 12.9 for Windows
CVE: CVE-2018-4318
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
Debian
CVE-2018-4318: webkit2gtk - A use after free issue was addressed with improved memory management. This issue...
vendor_debian·2018·CVSS 8.8
CVE-2018-4318 [HIGH] CVE-2018-4318: webkit2gtk - A use after free issue was addressed with improved memory management. This issue...
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.
Scope: local
bookworm: resolved (fixed in 2.22.0-2)
bullseye: resolved (fixed in 2.22.0-2)
forky: resolved (fixed in 2.22.0-2)
sid: resolved (fixed in 2.22.0-2)
trixie: resolved (fixed in 2.22.0-2)
No detection rules found.
No writeups or analysis indexed.
https://support.apple.com/kb/HT209106https://support.apple.com/kb/HT209107https://support.apple.com/kb/HT209109https://support.apple.com/kb/HT209140https://support.apple.com/kb/HT209141https://support.apple.com/kb/HT209106https://support.apple.com/kb/HT209107https://support.apple.com/kb/HT209109https://support.apple.com/kb/HT209140https://support.apple.com/kb/HT209141
2019-04-03
Published