CVE-2023-30918
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn telephony service, there is a missing permission check. This could lead to local information disclosure with no additional execution privileges needed.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA missing permission check in the Android telephony service allows local apps or processes to access telephony information (such as call logs, phone numbers, or SIM status) without proper authorization. Since no additional execution privileges are required, any local application can potentially read sensitive telephony data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 10.0= 11.0= 12.0= 13.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Android versionGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The installed version is 10.0, 11.0, 12.0, or 13.0 (exact match to affected versions)
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Verify telephony service patch statusCheck the installed system security patch level in Settings > About Phone > Security Patch Level, or run 'getprop ro.build.version.security_patch' via ADB shellAffected if The security patch level is earlier than the June 2023 Android security update that addresses this vulnerability
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Review app permissions for telephony accessCheck which apps are granted READ_PHONE_STATE, READ_CALL_LOG, or READ_SIM permissions in Settings > Apps > Permissions, or inspect /data/system/packages.xml for granted permissionsAffected if Apps without these manifest permissions are able to access telephony data, indicating exploitation or the vulnerability is present
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Audit telephony service logs for unauthorized accessRun 'logcat -d | grep -i telephony' or check bug reports in /data/user_de/0/com.android.phone/files/ for access attempts from unauthorized UIDsAffected if Logs show telephony data access from apps or UIDs that do not hold the required READ_PHONE_STATE permission
A device is affected if it runs Android 10.0, 11.0, 12.0, or 13.0 and does not have the June 2023 Android security patch applied.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper permission verification checks in the telephony service code paths that handle sensitive operations. Ensure that callers have the required READ_PHONE_STATE or related telephony permissions before granting access to phone data.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-30918 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-30918 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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