WiresharkApplication
CVE-2018-11354
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 Wireshark 2.6.0, the IEEE 1905.1a dissector could crash. This was addressed in epan/dissectors/packet-ieee1905.c by making a certain correction to string handling.
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 confidenceWireshark 2.6.0 contains a crash vulnerability in the IEEE 1905.1a dissector caused by improper string handling. A malformed packet processed by this dissector can trigger a crash, leading to denial of service. The vulnerability was addressed by correcting string handling logic in the packet-ieee1905.c file.
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
WiresharkApplication
= 2.6.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Check installed Wireshark versionRun 'wireshark --version' or 'tshark --version' from command line, or open Wireshark and go to Help > About Wireshark to view the version numberAffected if Version is exactly 2.6.0 (only this specific version is affected)
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Identify if IEEE 1905.1a dissector is presentSearch for 'ieee1905' in the Wireshark installation directory, or examine the file 'packet-ieee1905.c' in the source if compiling from sourceAffected if The dissector file exists in the installation (vulnerability resides in this component)
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Determine if packet capture analysis involves IEEE 1905.1a trafficOpen a packet capture file (pcap/pcapng) in Wireshark and use display filter 'ieee1905' or check if packets with ethertype 0x893a are presentAffected if The environment processes or may process pcap files containing IEEE 1905.1a protocol packets (this is the attack vector)
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Check for recent Wireshark crash logsExamine Wireshark crash dump files or logs in the application data directory for crashes occurring when opening pcap files with IEEE 1905.1a trafficAffected if Crashes are logged after processing pcap files containing malformed IEEE 1905.1a packets
You are affected only if running Wireshark version 2.6.0 AND processing packet captures containing IEEE 1905.1a protocol traffic, as the crash requires both the vulnerable version and the specific dissector being triggered.
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 dataUpgrade Wireshark to version 2.6.1 or later where the string handling fix has been applied. Avoid processing untrusted packet captures until the upgrade is complete.
Fix this in Wireshark
Scoped from the published advisory
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-11354 — 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-2018-11354 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
- No spam, self-promotion, credentials, or personal data