Security readout for executives and security teams
Plain-English summary
CVE-2023-21238 is an Android local information disclosure issue. A confused-deputy flaw in RemoteViews could allow images to leak between users on the same device. The sources say no extra execution privileges or user interaction are needed, but they do not provide CVSS scoring or evidence of active exploitation.
Executive priority
Handle through normal Android patch governance, with higher urgency for shared or multi-user devices where cross-user image leakage has greater privacy impact.
Technical view
Android RemoteViews.java visitUris handled URI visitation in a way that could expose images across user boundaries. Google lists Android 11, 12, 12L, and 13 as affected, with a framework/base code change referenced from the July 2023 Android Security Bulletin.
Likely exposure
Exposure is most relevant to Android devices running affected Android 11 through 13 builds that have not received the July 2023 Android security update or an OEM equivalent containing Google’s fix.
Exploitation context
The source bundle describes local exploitation with no additional execution privileges and no user interaction. It does not cite public exploit code, exploitation in the wild, or CISA KEV listing.
Researcher notes
Evidence is limited to the CVE record, Android bulletin, and referenced AOSP change. No CVSS vector, affected component detail beyond RemoteViews.java, or exploitation evidence is provided in the bundle.
Mitigation direction
- Apply the July 2023 Android security update or later vendor equivalent.
- Prioritize multi-user, shared, kiosk, and managed Android device fleets.
- Check OEM advisories for device-specific patch availability and rollout status.
- Treat unsupported Android 11-13 devices as persistently exposed until upgraded or replaced.
Validation and detection
- Inventory Android OS versions and security patch levels across managed devices.
- Confirm affected devices show July 2023 or later Android security patch level.
- Review OEM bulletins for explicit inclusion of CVE-2023-21238 fixes.
- Validate shared-device profiles are not running unpatched affected builds.
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-384: 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-2023-21238 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
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.