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TI-2018-03077 Aliases CVE-2018-4121GHSA-pg93-h5rr-phmm

Memory corruption in Apple WebKit

Priority MEDIUM 53CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 10 fixed, 2 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

An issue was discovered in certain Apple products. iOS before 11.3 is affected. Safari before 11.1 is affected. iCloud before 7.4 on Windows is affected. iTunes before 12.7.4 on Windows is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Why it matters now

EPSS 0.13099 96th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix Partial Red Hat: 1 advisoryRed Hat: 10 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 11.1VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 11.3VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 11.3VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 4.3VulnerableApple
cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:*before 7.4VulnerableApple
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:*before 12.7.4VulnerableApple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 11.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 11.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 11.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 4.3 Vulnerable ·Apple
  • cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:* Versions before 7.4 Vulnerable ·Apple
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:* Versions before 12.7.4 Vulnerable ·Apple

Remediation

Red Hat 1 advisory

  • RHSA-2018:3140 Released 2018-10-30 · Red Hat rating Moderate
    GNOME security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) PackageKit-1.1.10-1.el7, PackageKit-command-not-found-1.1.10-1.el7, PackageKit-glib-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux Client Optional (v. 7) PackageKit-1.1.10-1.el7, PackageKit-cron-1.1.10-1.el7, PackageKit-glib-devel-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux ComputeNode (v. 7) PackageKit-1.1.10-1.el7, PackageKit-glib-1.1.10-1.el7, adwaita-cursor-theme-3.28.0-1.el7 +47
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) PackageKit-1.1.10-1.el7, PackageKit-command-not-found-1.1.10-1.el7, PackageKit-cron-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux Server (v. 7) PackageKit-1.1.10-1.el7, PackageKit-command-not-found-1.1.10-1.el7, PackageKit-glib-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux Server Optional (v. 7) PackageKit-1.1.10-1.el7, PackageKit-1.1.10-1.el7.ppc, PackageKit-cron-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux Workstation (v. 7) PackageKit-1.1.10-1.el7, PackageKit-command-not-found-1.1.10-1.el7, PackageKit-glib-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux Workstation Optional (v. 7) PackageKit-1.1.10-1.el7, PackageKit-cron-1.1.10-1.el7, PackageKit-glib-devel-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) PackageKit-1.1.10-1.el7, PackageKit-command-not-found-1.1.10-1.el7, PackageKit-glib-1.1.10-1.el7 +47
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) PackageKit-1.1.10-1.el7, PackageKit-cron-1.1.10-1.el7, PackageKit-glib-devel-1.1.10-1.el7 +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:3140
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:3140
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-4121
  2. 2026-10-03 Alias added: GHSA-pg93-h5rr-phmm

References

Exploit 2

Advisory 7

  • TI-2019-06084 Type confusion in Apple iOS KEVCVSS 3.1HIGH 8.8
  • TI-2020-16987 Type confusion in Apple watchOS KEVCVSS 3.1HIGH 7.8
  • TI-2020-07926 Apple iOS: A remote attacker may be able to cause arbitrary code execution CVSS 3.1CRITICAL 9.8
  • TI-2018-03187 Memory corruption in Apple WebKit CVSS 3.1HIGH 8.8
  • TI-2018-03118 Memory corruption in Apple WebKit CVSS 3.0HIGH 8.8
  • TI-2018-03361 Memory corruption in iOS, tvOS, watchOS, Safari, iTunes for Windows, iCloud for Windows CVSS 3.0HIGH 8.8
See all 448 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences