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Appeon For PowerbuilderApplication · Sybase

CVE-2011-0496

HIGH · 10.0 CVSS v2.0 Published 2011-01-20
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
Unspecified vulnerability in Sybase EAServer 5.x and 6.x before 6.3 ESD#2, as used in Appeon, Replication Server Messaging Edition (RSME), and WorkSpace, allows remote attackers to install arbitrary web services and execute arbitrary code, related to a "design vulnerability."

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 confidence

A design vulnerability in Sybase EAServer 5.x and 6.x allows remote, unauthenticated attackers to install arbitrary web services, which can then be used to execute arbitrary code on the target system. This is a pre-authentication remote code execution vulnerability in the web services deployment functionality.

MitigationUpgrade to EAServer 6.3 ESD#2 or later. If immediate upgrade is not feasible, restrict network access to EAServer management ports and disable or firewall the web services deployment endpoints.

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
Appeon For PowerbuilderApplication
Affected:= 2.5= 2.6= 2.7= 2.8= 6.0= 6.1= 6.2= 6.5
EaserverApplication
Affected:= 5.0= 5.0.1= 5.1= 5.2= 5.2.1= 5.3= 5.5= 6.0= 6.0.2= 6.1= 6.2= 6.3
Replication ServerApplication
Affected:all versions= 15.2
Sybase WorkspaceApplication
Affected:all versions= 1.0= 1.5= 1.6= 1.7= 2.0= 2.0.1= 2.0.2= 2.1= 2.1.2= 2.5

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
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/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. Identify installed Sybase products
    Search for Sybase EAServer, Appeon For Powerbuilder, Replication Server, or Sybase Workspace directories or services on the system. Common paths include C:\Sybase\ on Windows or /opt/sybase/ on Linux.
    Affected if Any of the listed products (EAServer, Appeon For Powerbuilder, Replication Server, or Sybase Workspace) are found on the system
  2. Determine EAServer version
    Check the EAServer version by inspecting version files in the installation directory, or run the EAServer version command if available. Compare against the affected version list (5.0 through 6.3).
    Affected if The installed EAServer version is 5.0, 5.0.1, 5.1, 5.2, 5.2.1, 5.3, 5.5, 6.0, 6.0.2, 6.1, 6.2, or 6.3
  3. Determine Appeon For Powerbuilder version
    Check the installed Appeon For Powerbuilder version through the application's version information or registry entries on Windows systems.
    Affected if The installed version is 2.5, 2.6, 2.7, 2.8, 6.0, 6.1, 6.2, or 6.5
  4. Check web services deployment endpoint exposure
    Identify if the web services deployment functionality (typically accessible via HTTP/HTTPS on ports 8080, 8443, or management ports) is exposed to the network. Review firewall rules and listener configurations.
    Affected if The web services deployment port is accessible from untrusted network locations without authentication
  5. Verify management port accessibility
    Review network configuration to determine if EAServer management ports are accessible from outside the local network or from untrusted hosts.
    Affected if EAServer management or web services ports are reachable from unauthenticated remote systems

The environment is affected if any of the listed Sybase products (EAServer, Appeon For Powerbuilder, Replication Server, or Sybase Workspace) are installed with versions matching the affected ranges AND the web services deployment functionality is network-accessible.

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

Upgrade to EAServer 6.3 ESD#2 or later. If immediate upgrade is not feasible, restrict network access to EAServer management ports and disable or firewall the web services deployment endpoints.

Recommended fix Moderate confidence

EAServer 6.3 ESD#2 or later

  1. 1. Identify the current EAServer version in use by checking the installation or service documentation
  2. 2. Obtain EAServer version 6.3 ESD#2 or later from SAP/Sybase (the vendor that acquired Sybase)
  3. 3. Before upgrading, backup all existing configurations, deployments, and data
  4. 4. Review the EAServer 6.3 release notes for any compatibility notes with your deployed applications
  5. 5. Perform the upgrade following the official EAServer upgrade documentation
  6. 6. Verify that all previously deployed web services are functioning correctly after upgrade
  7. 7. Test that arbitrary web service installation is no longer possible without proper authentication
Caveat Consult EAServer 6.3 release notes for breaking changes; upgrading major versions may require application re-testing

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

Fix this in Appeon For Powerbuilder Scoped from the published advisory
  • Consultation8.0 h
  • Implementation12.0 h
  • Testing16.0 h
  • Review / QA6.0 h
42.0 hours of engineering $7,240
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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-2011-0496 in production — separate from our analysis above.

No notes yet

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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