CVE-2018-4323
published 2019-04-03CVE-2018-4323: Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9…
PriorityP262high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EXPLOIT
EPSS
9.61%
95.0th percentile
Multiple memory corruption issues were addressed with improved memory handling. 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
- →Trigger involves CSS properties: column-span:all on elements combined with -webkit-column-width on :root with position:fixed, alongside display:grid — this combination triggers the WebCore::RenderMultiColumnSet::updateMinimumColumnHeight use-after-free ↗
- →Crash originates in WebCore::RenderMultiColumnSet::updateMinimumColumnHeight — monitor WebKit/WebCore crashes or ASan reports in this function as an indicator of exploitation attempts ↗
- →The exploit PoC uses document.createElement('hr') appended to a DOM node inside jsfuzzer() — look for scripted DOM manipulation combined with multi-column CSS layout triggering layout recalculations via RenderBlockFlow and RenderGrid code paths ↗
- →Vulnerability is triggered by processing maliciously crafted web content in WebKit — any WebKit-based browser (Safari, iTunes, iCloud for Windows) rendering pages with complex multi-column + CSS grid layout combinations should be treated as a potential attack vector ↗
- ·Fixed in WebKit2GTK 2.22.0-2 on Debian (bookworm, bullseye, forky, sid, trixie) — systems running older versions remain vulnerable ↗
- ·Affected Apple products include 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 — all share the same vulnerable WebKit component ↗
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-c356-44qm-74fp: Multiple memory corruption issues were addressed with improved memory handling
ghsa_unreviewed·2022-05-14
CVE-2018-4323 [HIGH] CWE-119 GHSA-c356-44qm-74fp: Multiple memory corruption issues were addressed with improved memory handling
Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.
OSV
CVE-2018-4323: Multiple memory corruption issues were addressed with improved memory handling
osv·2019-04-03·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: Multiple memory corruption issues were addressed with improved memory handling
Multiple memory corruption issues were addressed with improved memory handling. 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-2018-4323: iCloud for Windows 7.7
vendor_apple·2018-10-08·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: 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-2018-4323
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
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-2018-4323: Safari 12
vendor_apple·2018-09-17·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: Safari 12
Apple Security Update: About the security content of Safari 12
Product: Safari
Version: 12
CVE: CVE-2018-4323
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Apple
CVE-2018-4323: tvOS 12
vendor_apple·2018-09-17·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: tvOS 12
Apple Security Update: About the security content of tvOS 12
Product: tvOS
Version: 12
CVE: CVE-2018-4323
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Apple
CVE-2018-4323: iOS 12
vendor_apple·2018-09-17·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: iOS 12
Apple Security Update: About the security content of iOS 12
Product: iOS
Version: 12
CVE: CVE-2018-4323
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Apple
CVE-2018-4323: iTunes 12.9 for Windows
vendor_apple·2018-09-12·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: 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-2018-4323
Component: WebKit
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
Debian
CVE-2018-4323: webkit2gtk - Multiple memory corruption issues were addressed with improved memory handling. ...
vendor_debian·2018·CVSS 8.8
CVE-2018-4323 [HIGH] CVE-2018-4323: webkit2gtk - Multiple memory corruption issues were addressed with improved memory handling. ...
Multiple memory corruption issues were addressed with improved memory handling. 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