Access EssentialsApplication · Citrix

CVE-2008-0356

HIGH · 10.0 CVSS v2.0 Published 2008-01-18
Fix available
A fix is available. Upgrade to after 4.5 or later.
See remediation →
100/100
Remediation priority · Urgent
High EPSS Remotely reachable No privileges Zero-click Patch available

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
Buffer overflow in the Independent Management Architecture (IMA) service in Citrix Presentation Server (MetaFrame Presentation Server) 4.5 and earlier, Access Essentials 2.0 and earlier, and Desktop Server 1.0 allows remote attackers to execute arbitrary code via an invalid size value in a packet to TCP port 2512 or 2513.

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
How this class of weakness works · CWE-119

The program reads or writes outside the bounds of an allocated buffer, corrupting adjacent memory. With crafted input an attacker can overwrite control data and, with effort, redirect execution to their own code. Remediation ranges from bounds checking and safe library functions to compiler mitigations, usually alongside a careful audit of the surrounding code.

General guidance for the memory buffer bounds error class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Access EssentialsApplication
Affected:<= 2.0
Desktop ServerApplication
Affected:= 1.0
Metaframe Presentation ServerApplication
Affected:<= 4.5
Presentation ServerApplication
Affected:all versions

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

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
Upgrade available Upgrade to a release after 4.5
Vendor patch support.citrix.com →
Recommended fix High confidence

Apply Citrix patch CTX114487; for long-term migration, upgrade to modern Citrix Virtual Apps and Desktops (current supported versions)

  1. Navigate to Citrix support portal and download the patch from CTX114487
  2. Review the patch release notes for any prerequisites or special installation instructions
  3. Apply the patch to all affected Citrix servers (Access Essentials, Desktop Server, Metaframe/Presentation Server)
  4. Restart the IMA service or reboot the server as instructed by the patch documentation
  5. Verify the patch was applied successfully by checking the IMA service version or build number
  6. Confirm the IMA service on TCP ports 2512 and 2513 is now responding correctly
Caveat This is a legacy 2008 vulnerability affecting very old product versions - ensure compatibility checks if patching legacy systems; older hardware may have constraints

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

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $3,200. Get the upgrade done

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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-2008-0356 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