Security readout for executives and security teams
Plain-English summary
This Apple issue could cause Private Browsing activity to be saved unexpectedly in App Privacy Report. The business impact is privacy exposure on affected iPhones or iPads, not device takeover. Apple says the issue is fixed in iOS 17.1 and iPadOS 17.1.
Executive priority
Handle through normal mobile patch governance. Prioritize shared, executive, regulated, or highly privacy-sensitive devices, but this does not warrant emergency response based on the provided evidence.
Technical view
CVE-2023-42939 is a CWE-841 logic issue in iOS and iPadOS, addressed with improved checks. CVSS 3.1 is 3.3 with local access, low complexity, low privileges, no user interaction, and low confidentiality impact. Exact vulnerable versions are not specified in the bundle.
Likely exposure
Exposure is likely limited to Apple iOS and iPadOS devices running affected versions before the 17.1 fixes. The bundle does not enumerate exact vulnerable builds or device models.
Exploitation context
The source bundle does not indicate active exploitation, and KEV status is false. The described impact is unexpected local privacy logging, not remote compromise, privilege escalation, or service disruption.
Researcher notes
Public detail is limited. Apple describes a logic issue fixed with improved checks and a possible App Privacy Report privacy leak. No component name, affected version range, exploit detail, or workaround is provided in the bundle.
Mitigation direction
- Update eligible devices to iOS 17.1 or iPadOS 17.1 or later.
- Use MDM compliance rules to flag devices below the fixed versions.
- Review Apple guidance before applying compensating controls.
- Treat shared or managed devices as higher privacy-risk until updated.
Validation and detection
- Inventory iOS and iPadOS versions across managed devices.
- Confirm devices report iOS 17.1, iPadOS 17.1, or later.
- Check MDM compliance records for outdated or unmanaged devices.
- Verify Apple advisory HT213982 lists CVE-2023-42939 as fixed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CWE-841: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-42939 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.3LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/HT213982CVE reference
- https://support.apple.com/kb/HT213982CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Enforcement of Behavioral Workflow
Improper Enforcement of Behavioral Workflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.