CVE-2019-8518
published 2019-12-18CVE-2019-8518: Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes…
PriorityP265high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EXPLOIT
EPSS
10.50%
95.3th percentile
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | icloud | < 7.11 | 7.11 |
| apple | icloud_for_windows | — | — |
| apple | icloud_for_windows | >= unspecified < iCloud for Windows 7.11 | iCloud for Windows 7.11 |
| apple | ios | — | — |
| apple | ios | >= unspecified < iOS 12.2 | iOS 12.2 |
| apple | iphone_os | < 12.2 | 12.2 |
| apple | itunes | < 12.9.4 | 12.9.4 |
| apple | itunes_12.9.4_for_windows | — | — |
| apple | itunes_for_windows | >= unspecified < iTunes 12.9.4 for Windows | iTunes 12.9.4 for Windows |
| apple | safari | < 12.1 | 12.1 |
| apple | safari | — | — |
| apple | safari | >= unspecified < Safari 12.1 | Safari 12.1 |
| apple | tvos | < 12.2 | 12.2 |
| apple | tvos | — | — |
| apple | tvos | >= unspecified < tvOS 12.2 | tvOS 12.2 |
| apple | watchos | < 5.2 | 5.2 |
| apple | watchos | — | — |
| apple | watchos | >= unspecified < watchOS 5.2 | watchOS 5.2 |
| debian | webkit2gtk | < webkit2gtk 2.24.1-1 (bookworm) | webkit2gtk 2.24.1-1 (bookworm) |
Detection & IOCsextracted from sources · hover to see the quote
- →The PoC JavaScript triggers the vulnerability by using a large negative array index (-698666199) inside a for-in loop combined with a property store (v8.a = 42) to force a CheckStructure node, causing LICM in the FTL JIT to hoist an unchecked GetByVal out-of-bounds access before the loop header. Detect JavaScript payloads using large negative numeric property accesses on arrays within loops. ↗
- →The vulnerability requires the FTL JIT compilation tier to be reached. The PoC uses a `while(true)` loop calling the vulnerable function repeatedly to accumulate JIT tier-up counts. Monitoring for tight infinite loops invoking functions with negative array index accesses may indicate exploitation attempts. ↗
- →The exploit requires a property store inside the loop (e.g., v8.a = 42) to force insertion of a CheckStructure node, which is a prerequisite for LICM to hoist the GetByVal. Detection rules should look for the combination of in-loop property assignment and negative-index array access on the same object. ↗
- →The crash occurs in the JavaScriptCore FTL JIT component (/System/Library/Frameworks/JavaScriptCore.framework/Resources/jsc on macOS). Crash reports or process crashes originating from this binary path may indicate exploitation of this CVE. ↗
- →The root cause is LICM (Loop-Invariant Code Motion) in DFG/FTL JIT moving a GetByVal node before its corresponding CheckBounds node. The safeToExecute function in DFGSafeToExecute.h incorrectly permits hoisting. Audit or instrument this code path for anomalous memory accesses far before the array element vector. ↗
- ·The PoC as published requires the JSC runtime flag --thresholdForFTLOptimizeAfterWarmUp=1000 to reliably trigger the bug. The author notes a modified version can crash with the default threshold, meaning real-world exploits may not require this flag. ↗
- ·The invocations of the vulnerable function with a non-array argument (integer 1337) are structurally necessary to prevent early JIT tier bailouts, which would block FTL compilation. A weaponized exploit may use different non-array argument values to achieve the same effect. ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.09.3CRITICALAV:N/AC:M/Au:N/C:C/I:C/A:C
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
CVEs like this are exactly what “Exploited This Week” covers.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
WebKitGTK+ vulnerabilities
vendor_ubuntu·2019-04-16
CVE-2019-11070 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.
Red Hat
webkitgtk: malicious web content leads to arbitrary code execution
vendor_redhat·2019-04-10·CVSS 8.8
CVE-2019-8518 [HIGH] CWE-94 webkitgtk: malicious web content leads to arbitrary code execution
webkitgtk: malicious web content leads to arbitrary code execution
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
Package: webkitgtk (Red Hat Enterprise Linux 6) - Out of support scope
Package: webkitgtk3 (Red Hat Enterprise Linux 7) - Will not fix
Apple
CVE-2019-8518: watchOS 5.2
vendor_apple·2019-03-27·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: watchOS 5.2
Apple Security Update: About the security content of watchOS 5.2
Product: watchOS
Version: 5.2
CVE: CVE-2019-8518
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-2019-8518: tvOS 12.2
vendor_apple·2019-03-25·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: tvOS 12.2
Apple Security Update: About the security content of tvOS 12.2
Product: tvOS
Version: 12.2
CVE: CVE-2019-8518
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-2019-8518: Safari 12.1
vendor_apple·2019-03-25·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: Safari 12.1
Apple Security Update: About the security content of Safari 12.1
Product: Safari
Version: 12.1
CVE: CVE-2019-8518
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-2019-8518: iOS 12.2
vendor_apple·2019-03-25·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: iOS 12.2
Apple Security Update: About the security content of iOS 12.2
Product: iOS
Version: 12.2
CVE: CVE-2019-8518
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-2019-8518: iTunes 12.9.4 for Windows
vendor_apple·2019-03-25·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: iTunes 12.9.4 for Windows
Apple Security Update: About the security content of iTunes 12.9.4 for Windows
Product: iTunes 12.9.4 for Windows
CVE: CVE-2019-8518
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-2019-8518: iCloud for Windows 7.11
vendor_apple·2019-03-25·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: iCloud for Windows 7.11
Apple Security Update: About the security content of iCloud for Windows 7.11
Product: iCloud for Windows
Version: 7.11
CVE: CVE-2019-8518
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-2019-8518: webkit2gtk - Multiple memory corruption issues were addressed with improved memory handling. ...
vendor_debian·2019·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: webkit2gtk - Multiple memory corruption issues were addressed with improved memory handling. ...
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
Scope: local
bookworm: resolved (fixed in 2.24.1-1)
bullseye: resolved (fixed in 2.24.1-1)
forky: resolved (fixed in 2.24.1-1)
sid: resolved (fixed in 2.24.1-1)
trixie: resolved (fixed in 2.24.1-1)
GHSA
GHSA-wvj5-49vm-wf8w: Multiple memory corruption issues were addressed with improved memory handling
ghsa_unreviewed·2022-05-24
CVE-2019-8518 [HIGH] GHSA-wvj5-49vm-wf8w: Multiple memory corruption issues were addressed with improved memory handling
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
OSV
CVE-2019-8518: Multiple memory corruption issues were addressed with improved memory handling
osv·2019-12-18·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518: Multiple memory corruption issues were addressed with improved memory handling
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
Project0
JSC Exploits - Project Zero
project_zero·2019-08-01
CVE-2017-2505 JSC Exploits - Project Zero
Posted by Samuel Groß, Project Zero
In this post, we will take a look at the WebKit exploits used to gain an initial foothold onto the iOS device and stage the privilege escalation exploits. All exploits here achieve shellcode execution inside the sandboxed renderer process (WebContent) on iOS. Although Chrome on iOS would have also been vulnerable to these initial browser exploits, they were only used by the attacker to target Safari and iPhones.
After some general discussion, this post first provides a short walkthrough of each of the exploited WebKit bugs and how the attackers construct a memory read/write primitive from them, followed by an overview of the techniques used to gain shellcode execution and how they bypassed existing JIT code injection mitigations, namely the “bulletpr
No detection rules found.
Bugzilla
CVE-2019-7285 CVE-2019-7292 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 mingw-webkitgtk: v
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-7285 [HIGH] CVE-2019-7285 CVE-2019-7292 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 mingw-webkitgtk: v
CVE-2019-7285 CVE-2019-7292 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 mingw-webkitgtk: various flaws [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please al
Bugzilla
CVE-2019-8518 mingw-webkitgtk: webkitgtk: malicious web content leads to arbitrary code execution [epel-7]
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518 mingw-webkitgtk: webkitgtk: malicious web content leads to arbitrary code execution [epel-7]
CVE-2019-8518 mingw-webkitgtk: webkitgtk: malicious web content leads to arbitrary code execution [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the follow
Bugzilla
CVE-2019-8518 mingw-webkitgtk3: webkitgtk: malicious web content leads to arbitrary code execution [epel-7]
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518 mingw-webkitgtk3: webkitgtk: malicious web content leads to arbitrary code execution [epel-7]
CVE-2019-8518 mingw-webkitgtk3: webkitgtk: malicious web content leads to arbitrary code execution [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the follo
Bugzilla
CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 webk
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-7285 [HIGH] CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 webk
CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 webkit2gtk3: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CV
Bugzilla
CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 ming
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-7285 [HIGH] CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 ming
CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 mingw-webkitgtk: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-leve
Bugzilla
CVE-2019-8518 webkitgtk: malicious web content leads to arbitrary code execution
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-8518 [HIGH] CVE-2019-8518 webkitgtk: malicious web content leads to arbitrary code execution
CVE-2019-8518 webkitgtk: malicious web content leads to arbitrary code execution
Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.
Reference:
https://webkitgtk.org/security/WSA-2019-0002.html
https://wpewebkit.org/security/WSA-2019-0002.html
Discussion:
Created mingw-webkitgtk tracking bugs for this issue:
Affects: fedora-all [bug 1719249]
Created webkit2gtk3 tracking bugs for this issue:
Affects: fedora-all [bug 1719250]
---
Created mingw-webkitgtk tracking bugs for this issue:
Affects: epel-7 [bug 1719255]
Created mingw-webkitgtk3 tracking bugs for this issue:
Affects: epel-7 [bug 1719256]
Bugzilla
CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 ming
bugzilla·2019-06-11·CVSS 8.8
CVE-2019-7285 [HIGH] CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 ming
CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-8544 CVE-2019-8558 CVE-2019-8559 CVE-2019-8563 mingw-webkitgtk3: various flaws [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE b
Bugzilla
CVE-2019-6201 CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-11070 CVE-2019-8544 ... webkit2gtk3:
bugzilla·2019-06-06·CVSS 5.3
CVE-2019-6201 [MEDIUM] CVE-2019-6201 CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-11070 CVE-2019-8544 ... webkit2gtk3:
CVE-2019-6201 CVE-2019-7285 CVE-2019-7292 CVE-2019-8503 CVE-2019-8506 CVE-2019-8515 CVE-2019-8518 CVE-2019-8523 CVE-2019-8524 CVE-2019-8535 CVE-2019-8536 CVE-2019-11070 CVE-2019-8544 ... webkit2gtk3: webkitgtk: Multiple vulnerabilities [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant
https://support.apple.com/HT209599https://support.apple.com/HT209601https://support.apple.com/HT209602https://support.apple.com/HT209603https://support.apple.com/HT209604https://support.apple.com/HT209605https://support.apple.com/HT209599https://support.apple.com/HT209601https://support.apple.com/HT209602https://support.apple.com/HT209603https://support.apple.com/HT209604https://support.apple.com/HT209605
2019-12-18
Published