CVE-2018-9566
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 process_service_search_rsp of sdp_discovery.c, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure when connecting to a malicious Bluetooth device with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-74249842.
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 · high confidenceAn out-of-bounds read vulnerability exists in the Bluetooth SDP (Service Discovery Protocol) processing code (sdp_discovery.c) in Android. When processing a malicious service search response, the code fails to validate bounds before reading data, potentially allowing a remote attacker to leak sensitive memory contents by tricking a user into connecting to a crafted Bluetooth device.
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= 7.0= 7.1.1= 7.1.2= 8.0= 8.1= 9.0CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/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 OS versionGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The installed version is 7.0, 7.1.1, 7.1.2, 8.0, 8.1, or 9.0
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Verify Bluetooth is enabledCheck Settings > Bluetooth, or run 'settings get global bluetooth_on' via ADB shell (returns 1 if enabled)Affected if Bluetooth is turned on and the device is discoverable or has paired devices
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Confirm Bluetooth stack is activeRun 'service list' via ADB shell and check for bluetooth service, or check that Bluetooth has been used recentlyAffected if The Bluetooth service is running and capable of accepting connections
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Review paired Bluetooth devicesGo to Settings > Bluetooth > Paired devices, or run 'bdaddr' via ADB shell to list paired devicesAffected if There are paired devices or the device has previously connected to other Bluetooth devices
A device is affected if it runs Android 7.0 through 9.0 and has Bluetooth enabled with the ability to accept or initiate Bluetooth connections, as the out-of-bounds read triggers during SDP response processing from a malicious device.
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 dataUsers should avoid pairing with untrusted or unknown Bluetooth devices. Apply Android security updates (particularly the January 2019 bulletin) which addresses this vulnerability in the Bluetooth stack.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-9566 — 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-2018-9566 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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