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CVE Record

CVE-2017-2355: An issue was discovered in certain Apple products.

An issue was discovered in certain Apple products. iOS before 10.2.1 is affected. Safari before 10.0.3 is affected. iCloud before 6.1.1 is affected. iTunes before 12.5.5 is affected. tvOS before 10.1.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access and application crash) via a crafted web site.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2017-2355 is an Apple WebKit flaw where viewing a malicious website could let an attacker run code or crash the application. The main business risk is legacy Apple devices or software still running pre-2017 versions that browse the web or render web content.

Executive priority

Treat this as a legacy exposure cleanup item unless vulnerable systems remain internet-facing or used for web browsing. If outdated Apple endpoints exist in production, prioritize update, replacement, or isolation because the flaw enables remote code execution through web content.

Technical view

The issue is an uninitialized memory access in WebKit affecting iOS before 10.2.1, Safari before 10.0.3, iCloud before 6.1.1, iTunes before 12.5.5, and tvOS before 10.1.1. The source describes remote arbitrary code execution or denial of service via crafted web content.

Likely exposure

Exposure is most likely in unmanaged, legacy, lab, kiosk, media, or embedded Apple systems that have not been updated past the listed fixed version thresholds. Modern supported Apple deployments are unlikely to remain exposed, but asset records should confirm this.

Exploitation context

The bundle does not show CISA KEV listing or cited evidence of active exploitation. The attacker interaction described is web-based: a targeted user or device processes a crafted website, potentially causing code execution or application crash.

Researcher notes

The source bundle lacks CVSS, CWE, and detailed affected CPE data. Analysis is based on the CVE description and Apple advisory references. Do not infer exploit maturity beyond the stated crafted-website vector and the absence of KEV evidence.

Mitigation direction

  • Update affected Apple products beyond the vulnerable version thresholds listed by Apple.
  • Remove or isolate devices that cannot receive supported Apple or vendor updates.
  • Restrict legacy systems from general web browsing and untrusted web content.
  • Check Apple and downstream vendor advisories for product-specific remediation guidance.

Validation and detection

  • Inventory iOS, Safari, iCloud, iTunes, and tvOS versions across managed assets.
  • Flag any versions older than iOS 10.2.1, Safari 10.0.3, iCloud 6.1.1, iTunes 12.5.5, or tvOS 10.1.1.
  • Confirm MDM or endpoint records show successful update deployment.
  • Review exceptions for legacy Apple systems with web access or WebKit-rendered content.
Prepared
Confidence
medium
Sources
8

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2017-2355 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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
7Source 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/an/an/aListed
Weakness

CWE details

No CWE listed

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