VMSA-2010-0020 : VMware ESXi 4.1 Update Installer SFCB Authentication Flaw

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote VMware ESXi host is missing a security-related patch.

Description :

a. ESXi 4.1 Update Installer SFCB Authentication Flaw

Under certain conditions, the ESXi 4.1 installer that upgrades an
ESXi 3.5 or ESXi 4.0 host to ESXi 4.1 incorrectly handles the SFCB
authentication mode. The result is that SFCB authentication could
allow login with any username and password combination.

An ESXi 4.1 host is affected if all of the following apply :
- ESXi 4.1 was upgraded from ESXi 3.5 or ESXi 4.0.
- The SFCB configuration file /etc/sfcb/sfcb.cfg was modified prior
to the upgrade.
- The sfcbd daemon is running (sfcbd runs by default).

Workaround
A workaround that can be applied to ESXi 4.1 is described in VMware
Knowledge Base Article KB 1031761

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2010-4573 to this issue.

See also :

http://lists.vmware.com/pipermail/security-announce/2011/000496.html

Solution :

Apply the missing patch.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.4
(CVSS2#E:F/RL:W/RC:C)
Public Exploit Available : true

Family: VMware ESX Local Security Checks

Nessus Plugin ID: 99166 ()

Bugtraq ID: 45543

CVE ID: CVE-2010-4573

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