VMware ESXi up to 5.5/6.5 Host Client Stored cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in VMware ESXi up to 5.5/6.5. Affected by this issue is some unknown functionality of the component Host Client. Such manipulation leads to cross site scripting (Stored). This vulnerability is documented as CVE-2017-4940. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in VMware ESXi up to 5.5/6.5 (Virtualization Software). Affected by this issue is an unknown function of the component Host Client. The manipulation with an unknown input leads to a cross site scripting vulnerability (Stored). Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

The ESXi Host Client in VMware ESXi (6.5 before ESXi650-201712103-SG, 5.5 before ESXi600-201711103-SG and 5.5 before ESXi550-201709102-SG) contains a vulnerability that may allow for stored cross-site scripting (XSS). An attacker can exploit this vulnerability by injecting Javascript, which might get executed when other users access the Host Client.

The bug was discovered 12/19/2017. The weakness was released 12/20/2017 by Jann Horn (Mike) with Google Project Zero (Website). The advisory is shared for download at vmware.com. This vulnerability is handled as CVE-2017-4940 since 12/26/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability scanner Nessus provides a plugin with the ID 105486 (ESXi 5.5 / 6.0 / 6.5 / Multiple Vulnerabilities (VMSA-2017-0021) (VMSA-2018-0002) (Spectre) (remote check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216142 (VMware ESXi 6.5 Patch Release ESXi650-201712103-SG,ESXi650-201712101-SG Missing (KB 2151102)(Spectre)).

Applying the patch 5.5 ESXi600-201711103-SG/5.5 ESXi550-201709102-SG/6.5 ESXi650-201712103-SG is able to eliminate this problem. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (105486) and SecurityFocus (BID 102371†). Entries connected to this vulnerability are available at VDB-110935, VDB-110937, VDB-110938 and VDB-111326. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Stored
Class: Cross site scripting / Stored
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105486
Nessus Name: ESXi 5.5 / 6.0 / 6.5 / Multiple Vulnerabilities (VMSA-2017-0021) (VMSA-2018-0002) (Spectre) (remote check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 5.5 ESXi600-201711103-SG/5.5 ESXi550-201709102-SG/6.5 ESXi650-201712103-SG

Timelineinfo

12/26/2016 🔍
12/19/2017 +358 days 🔍
12/19/2017 +0 days 🔍
12/20/2017 +1 days 🔍
12/20/2017 +0 days 🔍
12/21/2017 +1 days 🔍
12/29/2017 +8 days 🔍
01/03/2018 +5 days 🔍
01/27/2021 +1120 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: vmware.com
Researcher: Jann Horn (Mike)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-4940 (🔍)
GCVE (CVE): GCVE-0-2017-4940
GCVE (VulDB): GCVE-100-110936
SecurityFocus: 102371 - Multiple CPU Hardware CVE-2017-5753 Information Disclosure Vulnerability
SecurityTracker: 1040024

scip Labs: https://www.scip.ch/en/?labs.20060413
See also: 🔍

Entryinfo

Created: 12/21/2017 08:46
Updated: 01/27/2021 17:09
Changes: 12/21/2017 08:46 (71), 12/17/2019 08:38 (8), 01/27/2021 17:09 (2)
Complete: 🔍
Cache ID: 216::103

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