AlluraApplication · Apache
CVE-2018-1319
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 Apache Allura prior to 1.8.1, attackers may craft URLs that cause HTTP response splitting. If a victim goes to a maliciously crafted URL, unwanted results may occur including XSS or service denial for the victim's browsing session.
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 confidenceApache Allura prior to 1.8.1 is vulnerable to HTTP response splitting (CRLF injection). Attackers can craft malicious URLs containing CRLF characters that split HTTP response headers, allowing injection of arbitrary headers or body content. This can lead to XSS attacks against users who visit these URLs or cause denial of service through header manipulation.
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
AlluraApplication
<= 1.8.0CVSS 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
- 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 installed Apache Allura versionCheck the version file in the Allura installation directory. Common locations include a 'version' file in the root directory, or look for version information in the package management system if installed via pip or a package manager. Run: find /path/to/allura -name 'version' -o -name '__init__.py' 2>/dev/null | xargs grep -i version 2>/dev/null | head -20Affected if The installed version is 1.8.0 or lower (the vulnerable versions)
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Check Allura package version via PythonIf Allura is installed as a Python package, run: python -c 'import allura; print(allura.__version__)' 2>/dev/null or pip show allura 2>/dev/null | grep VersionAffected if The reported version is 1.8.0 or lower
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Verify web server handles user URLsThis vulnerability is exploitable when the web server (typically Paste, Nginx, or Apache) passes unsanitized user-supplied URL parameters to Allura. Inspect your web server configuration files (nginx.conf, httpd.conf, or paste.ini) for any proxy or routing rules that forward URL input to the Allura application without validationAffected if The web server forwards raw URL parameters to Allura without sanitizing CRLF characters
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Check for recent access logs with suspicious URLsReview web access logs (typically in /var/log/allura/ or similar) for any entries containing CRLF sequences (%0D%0A or literal carriage return/line feed characters) in the URL path or parametersAffected if Any logs show URLs with encoded or literal CRLF sequences being processed
A user is affected if Apache Allura version 1.8.0 or lower is installed and the web server passes user-supplied URL input to Allura without filtering CRLF characters.
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 to Apache Allura version 1.8.1 or later, which contains the fix for the input validation vulnerability. Before upgrading in production, test for compatibility with existing configurations and dependencies.
Fix this in Allura
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,992.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-1319 — 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-2018-1319 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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