CVE-2008-1034
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 · uneditedInteger underflow in Help Viewer in Apple Mac OS X before 10.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted help:topic URL that triggers a buffer overflow.
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 confidenceInteger underflow in the Help Viewer component of Mac OS X before version 10.5 allows remote attackers to trigger a buffer overflow via a crafted help:topic URL. The vulnerability can be exploited to execute arbitrary code or cause a denial of service through application crash.
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<= 10.4= 10.0= 10.1= 10.2= 10.3CVSS 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
- Network
- Complexity
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/Au:N/C:C/I:C/A:C
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 installed Mac OS X versionRun 'sw_vers -productVersion' in Terminal to retrieve the exact Mac OS X version numberAffected if The version is 10.0, 10.1, 10.2, 10.3, or 10.4 (any version 10.4 or earlier)
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Verify Help Viewer application presenceCheck for the existence of /System/Library/Frameworks/Help.framework/ or the Help Viewer application at /System/Library/Applications/Help Viewer.app/ using Finder or the 'ls' command in TerminalAffected if The Help Viewer framework and application files exist on the system
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Confirm version is within vulnerable rangeCompare the version from step 1 against the affected range: 10.0 through 10.4 (versions before 10.5)Affected if The system is running Mac OS X 10.4 or any earlier 10.x version
The environment is affected if the system runs Mac OS X version 10.4 or earlier and contains the Help Viewer component, since the integer underflow vulnerability exists in those versions of the Help Viewer.
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 · scopedUpgrade to Mac OS X 10.5 or later; for legacy systems no longer receiving patches, consider compensating controls such as disabling the Help Viewer or network segmentation to limit exposure to help:topic URL handling.
Mac OS X 10.5 (Leopard) or later; for modern systems, upgrade to a currently supported macOS version (11 Big Sur or later)
- 1. Back up all critical data and verify restore capabilities
- 2. Verify hardware compatibility with target macOS version
- 3. Obtain the Mac OS X 10.5 or later installation media from Apple
- 4. Perform a clean installation or in-place upgrade to Mac OS X 10.5 or later
- 5. After upgrade, verify Help Viewer functionality with a test help:topic URL
- 6. Restore user data and applications from backup
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2008-1034 — 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-2008-1034 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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