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CVE Record

CVE-2018-4345: A cross-site scripting issue existed in Safari.

A cross-site scripting issue existed in Safari. This issue was addressed with improved URL validation. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-4345 is an Apple cross-site scripting issue involving Safari URL validation. Apple says it was fixed by improving URL validation and affected older iOS, tvOS, Safari, iTunes for Windows, and iCloud for Windows versions. No active exploitation is identified in the provided sources.

Executive priority

Prioritize cleanup where legacy Apple or Windows endpoints remain in use, especially unmanaged systems. This is not evidenced as actively exploited in the provided sources, but browser-related XSS issues can affect user trust and session security.

Technical view

The source bundle describes a cross-site scripting flaw in Safari addressed through improved URL validation. Affected software is prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, and iCloud for Windows 7.7. No CVSS, CWE, component detail, or exploit prerequisites are provided.

Likely exposure

Exposure is most likely on legacy or unmanaged Apple and Windows endpoints still running the listed pre-fix versions. Modern fully updated fleets are unlikely to remain exposed, but inventory should confirm Safari, iOS, tvOS, iTunes for Windows, and iCloud for Windows versions.

Exploitation context

The provided sources do not show CISA KEV listing, active exploitation, public exploit status, or detailed attack conditions. Treat this as a client-side XSS risk with incomplete public technical detail, not as confirmed exploited activity.

Researcher notes

Public detail is limited to Apple’s brief description and affected-version list. There is no CVSS vector, CWE, root-cause detail, or reproducibility information in the bundle. Avoid making assumptions beyond URL validation and the named fixed versions.

Mitigation direction

  • Update iOS devices to iOS 12 or later.
  • Update tvOS devices to tvOS 12 or later.
  • Update Safari to Safari 12 or later.
  • Update iTunes for Windows to 12.9 or later.
  • Update iCloud for Windows to 7.7 or later.
  • Check Apple security guidance for platform-specific update paths.

Validation and detection

  • Inventory affected Apple and Windows endpoints by product version.
  • Confirm no systems run versions earlier than Apple’s fixed releases.
  • Review MDM and endpoint management reports for unmanaged legacy devices.
  • Validate browser and Apple application update compliance after remediation.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2018-4345 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aiOS, tvOS, Safari, iTunes for Windows, iCloud for WindowsVersions prior to: iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.