CVE-2023-42677
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 imsservice, there is a possible way to write permission usage records of an app due to 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 confidenceIn the imsservice (IMS - IP Multimedia Subsystem service on Android), a missing permission check allows an attacker to write permission usage records for any app without proper authorization. This enables local information disclosure of permission usage patterns without requiring elevated privileges.
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= 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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Verify Android versionCheck the device Android version via Settings > About Phone > Android version, or run 'adb shell getprop ro.build.version.release'Affected if The version is 11.0, 12.0, or 13.0 exactly (these are the affected versions per the CVE)
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Confirm imsservice presenceCheck if the IMS service is installed by running 'adb shell pm list packages | grep ims' or 'adb shell dumpsys package com.android.ims'Affected if The imsservice (com.android.ims) package exists on the device - this is the vulnerable component
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Check service accessibilityAttempt to query the service via 'adb shell service check iphonesubervice' or check service list for IMS-related services with 'adb shell service list | grep -i ims'Affected if The IMS service is listed as accessible without requiring elevated/system privileges
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Inspect permission enforcementReview the imsservice APK permissions and manifest with 'adb shell dumpsys package com.android.ims' and look for the WRITE_USAGE_STATS or equivalent permission handlingAffected if The service lacks proper permission validation before allowing write access to permission usage records
A device is affected if it runs Android 11.0, 12.0, or 13.0 AND has the imsservice (com.android.ims) installed with missing authorization checks for writing permission usage records.
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 validation in imsservice to verify the caller has appropriate authorization before allowing write access to permission usage records. Apply Android permission enforcement best practices.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-42677 — 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-2023-42677 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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