CVE-2017-8305
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 UDFclient (before 0.8.8) custom strlcpy implementation has a buffer overflow. UDFclient's strlcpy is used only on systems with a C library (e.g., glibc) that lacks its own strlcpy.
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 confidenceUDFclient before version 0.8.8 contains a buffer overflow in its custom strlcpy implementation, which is only used on systems whose C library (e.g., glibc) lacks a native strlcpy function. This critical vulnerability (CVSS 9.8) could allow remote code execution or denial of service when processing maliciously crafted input strings.
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<= 0.8.7CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/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.
-
Check if UDFclient is installedRun 'which udfclient' or 'find /usr -name udfclient 2>/dev/null' to locate the binaryAffected if UDFclient binary is found on the system
-
Determine the installed versionRun 'udfclient -V' or 'udfclient --version' to get the version numberAffected if Version returned is 0.8.7 or lower
-
Identify the C library in useRun 'ldd --version' or check the system's libc implementation (e.g., glibc, musl, uClibc)Affected if The system uses a C library that lacks native strlcpy (non-glibc systems may not have it)
-
Verify if custom strlcpy is compiled inInspect the UDFclient binary with 'strings' for patterns like 'strlcpy' from custom implementation or check compilation flags if source is availableAffected if The binary contains the custom strlcpy code and the system lacks native strlcpy
You are affected if UDFclient version is 0.8.7 or lower AND your system lacks a native strlcpy function in its C library, causing the vulnerable custom implementation to be used.
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 UDFclient version 0.8.8 or later, which contains a corrected strlcpy implementation. If immediate upgrading is not feasible, avoid using UDFclient on systems relying on the custom strlcpy until the patch can be applied.
Udfclient 0.8.8 or later
- 1. Identify the current installed version of Udfclient using package manager or compilation date.
- 2. Upgrade Udfclient to version 0.8.8 or later, which contains the fixed strlcpy implementation.
- 3. For package-based systems: use the distribution's package manager to update (e.g., apt-get update && apt-get install udfclient or equivalent).
- 4. For source-based installations: download and install version 0.8.8 or newer from the project distribution.
- 5. Verify the new version is installed and the custom strlcpy is no longer in use (the fix uses the system's native strlcpy when available).
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2017-8305 — 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-2017-8305 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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
- No spam, self-promotion, credentials, or personal data