CVE-2009-4493
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 · uneditedOrion Application Server 2.0.7 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.
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 confidenceOrion Application Server 2.0.7 writes HTTP request data to log files without sanitizing non-printable characters, allowing attackers to inject terminal escape sequences. When logs are viewed in a terminal emulator, these sequences can modify window titles, potentially execute arbitrary commands via terminal control sequences, or overwrite files.
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= 2.0.7CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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 Orion Application Server is runningCheck running processes for 'orion' or the Java application server process, or check for Orion installation directories on the systemAffected if Orion Application Server is installed and running
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Confirm the exact version of OrionLook for version information in the server installation, such as a version file, about page, or server banner response. Compare your installed version to the affected version 2.0.7Affected if The installed version is exactly 2.0.7
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Verify that HTTP logging is enabledCheck the server configuration for logging settings, typically in configuration files within the Orion installation directory. Confirm that access logging or request logging is turned onAffected if HTTP request logging is enabled and writing to log files
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Inspect log files for unsanitized charactersOpen or examine the HTTP access log files (commonly in a logs or access directory within the Orion installation). Look for non-printable characters or escape sequences (characters starting with ESC, typically \x1b or \[ in raw form) in the logged HTTP request dataAffected if Log files contain unfiltered HTTP request data with non-printable or escape sequence characters present
You are affected if you are running Orion Application Server version 2.0.7 with HTTP request logging enabled, and your log files contain unsanitized non-printable characters from HTTP requests.
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 dataSanitize all non-printable characters and escape sequences from HTTP request data before logging. Configure terminal emulators to disable or safely handle escape sequences when viewing logs, and implement log monitoring to detect injection attempts.
- Consultation2.0 h
- Implementation4.0 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-2009-4493 — 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-2009-4493 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