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VMware Security Advisory
Advisory ID: VMSA-2009-0003
Synopsis: ESX 2.5.5 patch 12 updates service console packag ed
Issue date: 2009-01-26
Updated on: 2009-01-26 (initial release of advisory)
CVE numbers: CVE-2008-3916
1. Summary
ESX 2.5.5 patch 12 Build 142708 updates service console package ed
2. Relevant releases
VMware ESX 2.5.5 before patch 12
Extended support for ESX 2.5.5 ends on 2010-06-15. Users should plan to upgrade to ESX 3.0.3
3. Problem Description
a. Updated ESX patch updates Service Console package "ed"
If the VMDK delta disk of a snapshot is corrupt, an ESX host might crash when the corrupted disk is loaded. VMDK delta files exist for virtual machines with one or more snapshots. This change ensures that a corrupt VMDK delta file cannot be used to crash ESX hosts.

"ed" is a line-oriented text editor, used to create, display, and modify text files (both interactively and via shell scripts).

A heap-based buffer overflow was discovered in the way "ed", the GNU line editor, processed long file names. An attacker could create a file with a specially-crafted name that could possibly execute an arbitrary code when opened in the "ed" editor.

The Common Vulnerabilities and Exposures project ( has assigned the name CVE-2008-3916 to this issue.

The following table lists what action remediates the vulnerability (column 4) if a solution is available.

VMware Product Product Version Running on Replace with/ Apply Patch
============= ======= ======= =================
VirtualCente any Windows not affected
hosted* any any not affected
ESXi 3.5 ESXi not affected
ESX 3.5 ESX ESX350-200901401-SG
ESX 3.0.3 ESX not affected
ESX 3.0.2 ESX not affected
ESX 2.5.5 ESX Upgrade Patch 12

* hosted products are VMware Workstation, Player, ACE, Server, Fusion.
4. Solution
Please review the patch/release notes for your product and version and verify the md5sum of your downloaded file.

ESX 2.5.5 Upgrade Patch 12 Build 142709
md5sum: 2a0bd5cc3591b1f6b04616fa2c97f78c
6. Change Log
2009-02-20 VMSA-2009-0003 Initial security advisory after release of patch 12 for ESX 2.5.5 on 2009-02-20.
7. Contact
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