HTTP ServerWeb server / proxy · Apache
CVE-2007-6750
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 Apache HTTP Server 1.x and 2.x allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris, related to the lack of the mod_reqtimeout module in versions before 2.2.15.
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 confidenceThe Apache HTTP Server 1.x and 2.x allows remote attackers to cause a denial of service by sending partial HTTP requests that never complete, as demonstrated by Slowloris. Attackers maintain many open connections by sending headers slowly or incompletely, exhausting the server's connection pool and causing daemon outage. This vulnerability exists because versions before 2.2.15 lack the mod_reqtimeout module which would timeout incomplete requests.
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
HTTP ServerWeb server / proxy
<= 2.2.14= 1.0= 1.0.2= 1.0.3= 1.0.5= 1.1= 1.1.1= 1.2= 1.2.4= 1.2.5= 1.2.6= 1.2.9CVSS 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
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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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Determine installed Apache HTTP Server versionRun `httpd -v` or `apache2 -v` to retrieve the server version. On some systems, check `/usr/sbin/httpd -v` or `/usr/sbin/apache2 -v`.Affected if The version is 2.2.14 or earlier, or any 1.x version listed in the affected range (1.0, 1.0.2, 1.0.3, 1.0.5, 1.1, 1.1.1, 1.2, 1.2.4, 1.2.5, 1.2.6, 1.2.9).
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Verify if mod_reqtimeout module is loadedRun `httpd -M` or `apache2 -M` to list compiled-in and loaded modules. Look for `reqtimeout_module` in the output.Affected if The module list does not contain mod_reqtimeout (or the module is not present in the output).
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Check if mod_reqtimeout is enabled in configurationSearch for `mod_reqtimeout` or `reqtimeout` in Apache configuration files (typically in `/etc/httpd/conf.d/`, `/etc/apache2/mods-enabled/`, or the main `httpd.conf`/`apache2.conf`).Affected if No LoadModule directive for mod_reqtimeout exists, or the module is not enabled in any configuration file.
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Inspect mod_reqtimeout configuration settingsIf the module is loaded, check the configuration for Timeout directive values (e.g., `RequestReadTimeout header=20-40,body=20`) in the Apache config files.Affected if The mod_reqtimeout module is not configured with timeout limits for headers or body, or no RequestReadTimeout directive is present.
You are affected if your Apache version is 2.2.14 or earlier, or any 1.x version, AND the mod_reqtimeout module is either not loaded or not configured with timeout limits for incomplete 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 dataEnable and configure the mod_reqtimeout module to limit the time allowed for receiving request headers and body, or upgrade to Apache HTTP Server 2.2.15 or later which includes this protection by default.
Fix this in HTTP Server
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing4.0 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 $2,752.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2007-6750 — 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-2007-6750 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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