CVE-2018-0508
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 · uneditedCross-site scripting vulnerability in epg search result viewer (kkcald) 0.7.21 and earlier allows an attacker to inject arbitrary web script or HTML via unspecified vectors.
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 confidenceCross-site scripting (XSS) vulnerability in the epg search result viewer component of kkcald version 0.7.21 and earlier allows unauthenticated remote attackers to inject malicious JavaScript or HTML code through unsanitized user input in the search functionality. The injected scripts execute in the context of the victim's browser when viewing search results.
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<= 0.7.21CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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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Identify if kkcald is installedCheck for the presence of kkcald by searching for its executable, service, or web application files in common locations such as /usr/bin/, /opt/, or web server document roots. Also check running processes for kkcald or check installed packages via package manager.Affected if kkcald is found running or installed on the system
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Determine installed kkcald versionRun 'kkcald --version' or check the application's about/help page. If installed via package manager, use 'dpkg -l kkcald' or 'rpm -qi kkcald' depending on your system. Look for the version number in the output.Affected if The version is 0.7.21 or earlier
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Verify epg search functionality is accessibleCheck if the epg search result viewer component is enabled and accessible. This may involve checking the application's web interface, configuration files, or service status. Look for URLs or endpoints related to EPG search functionality.Affected if The epg search feature is enabled and reachable
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Test search input for reflected contentSubmit a test string such as '<script>alert(1)</script>' or '<img src=x onerror=alert(1)>' through the search functionality and examine if this string appears unmodified in the search results page. View the page source to confirm whether HTML/script tags are present without encoding.Affected if User-supplied search input is reflected in the results page without sanitization or encoding
If kkcald version 0.7.21 or earlier is installed and the epg search feature is accessible, the environment is affected by this XSS vulnerability.
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 dataImplement contextual output encoding for all user-supplied data displayed in search results and apply input validation with strict allowlists; consider deploying a Web Application Firewall as an interim control.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-0508 — 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-2018-0508 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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