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RealplayerApplication · Realnetworks

CVE-2008-3066

HIGH · 9.3 CVSS v2.0 Published 2008-07-28
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
Stack-based buffer overflow in a certain ActiveX control in rjbdll.dll in RealNetworks RealPlayer Enterprise, RealPlayer 10, and RealPlayer 10.5 before build 6.0.12.1675 allows remote attackers to execute arbitrary code by importing a file into a media library and then deleting this file.

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 rjbdll.dll ActiveX control in RealPlayer allows remote code execution. Attackers exploit this by importing a crafted media file into the media library and then deleting it, triggering the overflow.

MitigationUpdate RealPlayer to build 6.0.12.1675 or later, or disable the vulnerable rjbdll.dll ActiveX control in Internet Explorer until patching can be completed.

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
RealplayerApplication
Affected:= 10.0= 10.5

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 if RealPlayer is installed
    Look for RealPlayer installation in typical locations: C:\Program Files\Real\RealPlayer\ or C:\Program Files (x86)\Real\RealPlayer\. Check Start Menu for RealPlayer entry.
    Affected if RealPlayer is not installed on the system.
  2. Determine the installed RealPlayer version
    Open RealPlayer, go to Help > About RealPlayer, or right-click the RealPlayer executable and select Properties > Details to view the version number.
    Affected if The installed version is exactly 10.0 or exactly 10.5.
  3. Locate and verify the rjbdll.dll ActiveX control
    Search for rjbdll.dll in the RealPlayer installation directory (typically in the folder where RealPlayer is installed).
    Affected if The file rjbdll.dll exists in the RealPlayer installation folder.
  4. Check if the ActiveX control is registered
    Check Windows Registry for the CLSID of rjbdll.dll under HKEY_CLASSES_ROOT\CLSID\. The typical CLSID for this control is {3A3DCD6C-3EAB-43DC-BCDE-45671CE800C8}. Use regedit to navigate or run: reg query "HKEY_CLASSES_ROOT\CLSID\{3A3DCD6C-3EAB-43DC-BCDE-45671CE800C8}"
    Affected if The rjbdll.dll CLSID is present in the Windows Registry, meaning the ActiveX control is registered.
  5. Check if ActiveX controls are enabled in Internet Explorer
    In Internet Explorer, go to Tools > Internet Options > Security > Custom Level > ActiveX controls and plugins. Verify if controls are set to Enable or Prompt.
    Affected if ActiveX controls are enabled or set to prompt in Internet Explorer.

The system is affected if RealPlayer version 10.0 or 10.5 is installed AND the rjbdll.dll ActiveX control is registered and enabled, as the buffer overflow can trigger when importing and deleting a crafted media file.

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

Update RealPlayer to build 6.0.12.1675 or later, or disable the vulnerable rjbdll.dll ActiveX control in Internet Explorer until patching can be completed.

Recommended fix Moderate confidence

RealPlayer 10.5 build 6.0.12.1675 or later, or migrate to newer RealPlayer versions

  1. Check current RealPlayer version by opening RealPlayer and navigating to Help > About RealPlayer
  2. If version is RealPlayer 10.0 or 10.5, upgrade to a version with build 6.0.12.1675 or later
  3. Download the latest RealPlayer version from the official RealNetworks website (service.real.com)
  4. Install the updated version, ensuring the ActiveX control rjbdll.dll is updated to a patched version
  5. Verify the fix by confirming the version/build number in Help > About RealPlayer
Caveat Legacy RealPlayer 10.x features may differ in newer versions; verify compatibility with enterprise deployment requirements if applicable

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

Fix this in Realplayer Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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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-2008-3066 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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