ID CVE-2011-1788
Summary vCenter Server in VMware vCenter 4.0 before Update 3 and 4.1 before Update 1 allows local users to discover the SOAP session ID via unspecified vectors.
Vulnerable Configurations
  • cpe:2.3:a:vmware:vcenter:4.0:update_2
  • cpe:2.3:a:vmware:vcenter:4.0:update_1
  • cpe:2.3:a:vmware:vcenter:4.0
  • cpe:2.3:a:vmware:vcenter:4.1
Base: 2.1 (as of 10-05-2011 - 14:27)
  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
  • Reusing Session IDs (aka Session Replay)
    This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
nessus via4
  • NASL family VMware ESX Local Security Checks
    NASL id VMWARE_VMSA-2011-0008.NASL
    description a. vCenter Server Directory Traversal vulnerability A directory traversal vulnerability allows an attacker to remotely retrieve files from vCenter Server without authentication. In order to exploit this vulnerability, the attacker will need to have access to the network on which the vCenter Server host resides. In case vCenter Server is installed on Windows 2008 or Windows 2008 R2, the security vulnerability is not present. The Common Vulnerabilities and Exposures project ( has assigned the name CVE-2011-0426 to this issue. b. vCenter Server SOAP ID disclosure The SOAP session ID can be retrieved by any user that is logged in to vCenter Server. This might allow a local unprivileged user on vCenter Server to elevate his or her privileges. VMware would like to thank Claudio Criscione for reporting this issue to us. The Common Vulnerabilities and Exposures project ( has assigned the name CVE-2011-1788 to this issue. c. vSphere Client Installer package not digitally signed The digitally signed vSphere Client installer is packaged in a self-extracting installer package which is not digitally signed. As a result, when you run the install package file to extract and start installing, the vSphere Client installer may display a Windows warning message stating that the publisher of the install package cannot be verified. The vSphere Client Installer package of the following product versions is now digitally signed : vCenter Server 4.1 Update 1 vCenter Server 4.0 Update 3 ESXi 4.1 Update 1 ESXi 4.0 with patch ESXi400-201103402-SG ESX 4.1 Update 1 ESX 4.0 with patch ESX400-201103401-SG An install or update of the vSphere Client from these releases will not present a security warning from Windows. Note: typically the vSphere Client will request an update if the existing client is pointed at a newer version of vCenter or ESX. VMware Knowledge Base article 1021404 explains how the unsigned install package can be obtained in an alternative, secure way for an environment with VirtualCenter 2.5, ESXi/ESX 3.5 or ESX 3.0.3. VMware would like to thank Claudio Criscione for reporting this issue to us. The Common Vulnerabilities and Exposures project ( has assigned the name CVE-2011-1789 to this issue.
    last seen 2019-02-21
    modified 2018-08-06
    plugin id 53840
    published 2011-05-09
    reporter Tenable
    title VMSA-2011-0008 : VMware vCenter Server and vSphere Client security vulnerabilities
  • NASL family Misc.
    description The remote VMware ESX / ESXi host is missing a security-related patch. It is, therefore, affected by multiple vulnerabilities : - A directory traversal vulnerability exists that allows a remote attacker to read arbitrary files. (CVE-2011-0426) - An information disclosure vulnerability exists due to insecure storage of SOAP sesion IDs in a log file. A local attacker can exploit this to disclose administrative user IDs. (CVE-2011-1788) - A digital signature verification weakness exists in the self-extracting installer in the vSphere Client Installer package. A remote attacker can exploit this to spoof the software distribution via a Trojan horse installer. (CVE-2011-1789)
    last seen 2019-02-21
    modified 2018-08-06
    plugin id 89677
    published 2016-03-04
    reporter Tenable
    title VMware ESX / ESXi Multiple Vulnerabilities (VMSA-2011-0008) (remote check)
refmap via4
bid 47742
mlist [security-announce] 20110505 VMSA-2011-0008 VMware vCenter Server and vSphere Client security vulnerabilities
osvdb 72179
sectrack 1025502
xf vcenter-soapid-info-disclosure(67304)
Last major update 16-05-2011 - 22:39
Published 09-05-2011 - 18:55
Last modified 16-08-2017 - 21:34
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