CVE-2023-42527
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 · uneditedImproper input validation vulnerability in ProcessWriteFile of libsec-ril prior to SMR Nov-2023 Release 1 allows local attackers to expose sensitive information.
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 confidenceImproper input validation in the ProcessWriteFile function of Samsung's libsec-ril library (prior to SMR Nov-2023 Release 1) allows local attackers to bypass validation checks and access sensitive information stored on the 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= 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 OS versionGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The device is running Android 11.0, 12.0, or 13.0 specifically (these are the exact affected versions listed)
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Locate the libsec-ril libraryCheck for the presence of libsec-ril.so in /vendor/lib/ or /system/lib/ directories via ADB: 'find / -name libsec-ril.so 2>/dev/null'Affected if The library exists on the device (vulnerability is in this component)
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Check libsec-ril library versionRun 'getprop ro.build.version.securing' or inspect the library file metadata via ADB shell, or check Samsung SMR patch level in Settings > About Phone > Software information > Security patch levelAffected if The security patch level is earlier than November 2023, indicating the vulnerable library version is still in use
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Verify security patch levelCheck Security patch level in Settings > About Phone > Software information, or run 'getprop ro.build.version.security_patch' via ADBAffected if The Security patch level shows a date BEFORE November 2023 (the fixed release)
The device is affected if it runs Android 11.0, 12.0, or 13.0 AND has a security patch level earlier than November 2023, indicating the unpatched libsec-ril library is still present.
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.
dbcve · scopedApply the Samsung SMR Nov-2023 Release 1 security update to affected devices to patch the vulnerable libsec-ril library.
SMR Nov-2023 Release 1
- Check your current Samsung Android security patch level in Settings > About Phone > Software Information
- Ensure your device receives and install the SMR (Samsung Mobile Security) Nov-2023 Release 1 update or later
- If automatic updates are enabled, wait for the OTA (Over-The-Air) update to become available for your device model
- Alternatively, manually check for updates via Settings > Software Update > Download and Install
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-42527 — 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-2023-42527 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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