dbcve.org
FilterApplication · Blue Coat Systems

CVE-2007-2952

HIGH · 9.3 CVSS v2.0 Published 2008-08-01
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Multiple stack-based buffer overflows in the filter service (aka k9filter.exe) in Blue Coat K9 Web Protection 3.2.44 with Filter 3.2.32 allow (1) remote attackers to execute arbitrary code via a long HTTP Referer header to the K9 Web Protection Administration interface and (2) man-in-the-middle attackers to execute arbitrary code via an HTTP response with a long HTTP version field.

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 confidence

Stack-based buffer overflow in the filter service (k9filter.exe) of Blue Coat K9 Web Protection 3.2.44 with Filter 3.2.32 allows remote arbitrary code execution via (1) a long HTTP Referer header to the admin interface, or (2) a man-in-the-middle HTTP response with an overly long HTTP version field.

MitigationApply vendor-supplied patch or upgrade to a newer version of K9 Web Protection. Additionally, restrict network access to the K9 Web Protection Administration interface to prevent external attackers from sending malicious Referer headers.

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
FilterApplication
Affected:= 3.2.32
K9 Web ProtectionApplication
Affected:= 3.2.44

CVSS 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
M
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

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 checks

Work through these to decide whether this CVE applies to you.

  1. Check K9 Web Protection application version
    Open the K9 Web Protection application and navigate to Help > About, or check the Windows Add/Remove Programs list for the installed version entry
    Affected if The installed version is exactly 3.2.44
  2. Check k9filter.exe file version
    Locate k9filter.exe in the K9 Web Protection installation directory (typically C:\Program Files\K9 Web Protection or similar). Right-click the file, select Properties, and view the File Version on the Details tab. Alternatively, run "dir k9filter.exe" from the install directory and check the version info.
    Affected if The k9filter.exe file version shows 3.2.32 or matches the vulnerable filter version
  3. Verify admin interface network exposure
    Check if the K9 Web Protection admin interface port (default is 2372) is listening on external network interfaces. Run "netstat -an | findstr :2372" and verify if the binding is to 0.0.0.0 or a non-localhost IP address.
    Affected if The admin interface is bound to a non-localhost address, making it reachable from the network
  4. Check if K9 proxy service is running
    Open Windows Services and look for the K9 Web Protection service, or run "sc query k9filter" or "tasklist | findstr k9" to see if the filter service is active.
    Affected if The K9 filter service is running and configured to intercept HTTP traffic

You are affected if K9 Web Protection version is 3.2.44 OR k9filter.exe version is 3.2.32, AND either the admin interface is network-accessible or the K9 proxy is actively filtering traffic.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor-supplied patch or upgrade to a newer version of K9 Web Protection. Additionally, restrict network access to the K9 Web Protection Administration interface to prevent external attackers from sending malicious Referer headers.

Recommended fix High confidence
  1. This is a historical vulnerability from 2007 affecting Blue Coat K9 Web Protection 3.2.44 with Filter 3.2.32.
  2. The K9 Web Protection product has been discontinued and is no longer supported by Blue Coat/Symantec.
  3. If this product is still in use, the system should be retired and replaced with a current, supported web filtering solution.
  4. No vendor-provided patch or upgrade path is available for this legacy product.
Caveat Product is end-of-life; no further updates or support available from vendor

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Filter Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,780
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,848.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2007-2952 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2007-2952 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

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.

What belongs here
  • 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