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Fencer Intel
high 8.8

CVE-2019-8506 kev in the critical feed json

A type confusion issue was addressed with improved memory handling.

published 6y ago modified 4mo ago also EUVD-2019-17896

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2022-05-04
epss
16.2%
EPSS 16.2% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

A type confusion issue was 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.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • Apple iOS iOS 12.2
  • Apple tvOS tvOS 12.2
  • Apple watchOS watchOS 5.2
  • Apple Safari Safari 12.1
  • Apple iTunes for Windows iTunes 12.9.4 for Windows
  • Apple iCloud for Windows iCloud for Windows 7.11
  • webkit2gtk Debian 14, Debian 13, Debian 12 2.24.1-1

debian advisories DEBIAN-CVE-2019-8506

  • webkit2gtk Ubuntu 18.04 LTS 2.24.1-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-8506

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • webkitgtk4 RHEL 7 2.28.2-2.el7
  • webkitgtk4-jsc RHEL 7 2.28.2-2.el7
  • gdm RHEL 8 1:3.28.3-22.el8
  • gjs RHEL 8 1.56.2-3.el8
  • SDL RHEL 8 1.2.15-35.el8
  • gtk3 RHEL 8 3.22.30-4.el8
  • gvfs RHEL 8 1.36.2-6.el8
  • pango RHEL 8 1.42.4-6.el8

red hat advisories RHSA-2020:4035RHSA-2019:3553

  • webkit2gtk3 SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +12 more 2.24.1-2.41.5
  • webkit2gtk3 SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 2.24.1-3.24.1

suse advisories SUSE-SU-2019:1155-1SUSE-SU-2019:1137-1

  • webkit2gtk3 openSUSE Leap 15.0 2.24.1-lp150.2.19.1

opensuse advisories openSUSE-SU-2019:1374-1

  • pidgin AlmaLinux 8 2.13.0-5.el8
  • libpurple AlmaLinux 8 2.13.0-5.el8
  • gdk-pixbuf2 AlmaLinux 8 2.36.12-5.el8
  • gnome-desktop3 AlmaLinux 8 3.32.2-1.el8
  • gdk-pixbuf2-xlib AlmaLinux 8 2.36.12-5.el8
  • gdk-pixbuf2-modules AlmaLinux 8 2.36.12-5.el8

almalinux advisories ALSA-2019:3553

  • pango Rocky Linux 8 1.42.4-6.el8
  • pidgin Rocky Linux 8 2.13.0-5.el8
  • gdk-pixbuf2 Rocky Linux 8 2.36.12-5.el8
  • gnome-desktop3 Rocky Linux 8 3.32.2-1.el8

rocky linux advisories RLSA-2019:3553

  • webkit2gtk Alpine 3.20, Alpine 3.19, Alpine 3.18 +9 more 2.24.1-r0

alpine advisories ALPINE-CVE-2019-8506

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2019-8506 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-8506 updated cvss 6.3

webkitgtk: malicous web content leads to arbitrary code execution

  • Red Hat Enterprise Linux 6 webkitgtk
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) gvfs 1.36.2-6.el8, nautilus 3.28.1-10.el8, gdk-pixbuf2-xlib 2.36.12-5.el8 Red Hat Enterprise Linux AppStream (v. 8) gjs 1.56.2-3.el8, gdm 3.28.3-22.el8, gvfs 1.36.2-6.el8, SDL 1.2.15-35.el8, gtk3 3.22.30-4.el8, pango 1.42.4-6.el8, +82 more Red Hat Enterprise Linux BaseOS (v. 8) mozjs60 60.9.0-3.el8, gdk-pixbuf2 2.36.12-5.el8, gsettings-desktop-schemas 3.32.0-3.el8
    fixed: vendor fix RHSA-2019:3553
  • Red Hat Enterprise Linux Client (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux Client Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7, webkitgtk4-devel 2.28.2-2.el7, webkitgtk4-debuginfo 2.28.2-2.el7, webkitgtk4-jsc-devel 2.28.2-2.el7 Red Hat Enterprise Linux ComputeNode (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7, webkitgtk4-devel 2.28.2-2.el7, webkitgtk4-debuginfo 2.28.2-2.el7, webkitgtk4-jsc-devel 2.28.2-2.el7 Red Hat Enterprise Linux Server (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux Server Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7, webkitgtk4-devel 2.28.2-2.el7, webkitgtk4-debuginfo 2.28.2-2.el7, webkitgtk4-jsc-devel 2.28.2-2.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7
    fixed: vendor fix RHSA-2020:4035

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-46647)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-05-25 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Apple, Multiple Products
CISA name
Apple Multiple Products Type Confusion Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

16.16% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-46647 WebKit JavaScriptCore - 'createRegExpMatchesArray' Type Confusion dos, 2019-04-03

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Apple iOS
  • Apple tvOS
  • Apple watchOS
  • Apple Safari
  • Apple iTunes for Windows
  • Apple iCloud for Windows

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.