CVE-2024-8272
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 · uneditedThe com.uaudio.bsd.helper service, responsible for handling privileged operations, fails to implement critical client validation during XPC inter-process communication (IPC). Specifically, the service does not verify the code requirements, entitlements, or security flags of any client attempting to establish a connection. This lack of proper validation allows unauthorized clients to exploit the service's methods and escalate privileges to root.
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 confidenceA privileged XPC helper service (com.uaudio.bsd.helper) on macOS fails to validate connecting clients during XPC IPC communication. The service does not verify client code requirements, entitlements, or security flags, allowing any local process to connect and invoke privileged methods, resulting in local privilege escalation to root.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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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Locate the helper service binarySearch for the com.uaudio.bsd.helper binary using: find / -name '*bsd*helper*' 2>/dev/null or ls -la /Library/PrivilegedHelperTools/ 2>/dev/nullAffected if The helper binary exists at any location on the system
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Verify the helper service is loadedCheck if the service is registered with launchd: launchctl list | grep -i bsd or launchctl list | grep -i uaudioAffected if The service appears in the launchctl list indicating it is active
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Check helper binary permissionsRun: ls -la <path_to_helper_binary> to examine ownership (should be root:wheel) and permissions (should not be world-writable)Affected if The binary is owned by root with wheel group and permissions are 755 or stricter; loose permissions (world-writable) indicate a weaker state
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Verify code signing statusRun: codesign -dv <path_to_helper_binary> 2>&1 to check if the binary is signed and validate the signatureAffected if The binary is unsigned or has an invalid code signature, which would mean client validation cannot be enforced
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Check launchd plist configurationExamine the helper's launchd plist in /Library/LaunchDaemons/ or /Library/LaunchAgents/ for the service: ls -la /Library/LaunchDaemons/*bsd*.plist 2>/dev/nullAffected if A launchd plist exists for this helper service, confirming it runs as a privileged helper
If the com.uaudio.bsd.helper binary exists, is running as a privileged launchd service, and lacks proper code signing or client validation, the system is vulnerable to local privilege escalation via unauthorized XPC connections.
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 dataThe vendor must implement proper XPC client validation in the helper service, including verification of client entitlements, code signature requirements, and security flags before accepting any connection or allowing method invocations.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-8272 — 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-2024-8272 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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- Version or environment caveats, and links to real fixes
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