VMware ESXi Server 5.0/5.1/5.5/6.0 Header crlf injection

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in VMware ESXi Server 5.0/5.1/5.5/6.0. This issue affects some unknown processing of the component Header Handler. Performing a manipulation of the argument Server results in crlf injection. This vulnerability is reported as CVE-2016-5331. The attack is possible to be carried out remotely. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in VMware ESXi Server 5.0/5.1/5.5/6.0 (Virtualization Software). This affects an unknown functionality of the component Header Handler. The manipulation of the argument Server with an unknown input leads to a crlf injection vulnerability. CWE is classifying the issue as CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

CRLF injection vulnerability in VMware vCenter Server 6.0 before U2 and ESXi 6.0 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.

The weakness was disclosed 08/04/2016 by Vladimir Ivanov, Andrey Evlanin, Mikhail Stepankin, Artem Kondratenko, Arseniy Sharoglazov, Matt Foster, Matthias Deeg, Eva Esteban Molina and Ammarit Thongthua with Positive Technologies as VMSA-2016-0010 as confirmed advisory (Website). It is possible to read the advisory at vmware.com. This vulnerability is uniquely identified as CVE-2016-5331 since 06/07/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 92870 (VMware vCenter Server 6.0.x < 6.0u2 Unspecified HTTP Header Injection (VMSA-2016-0010)), 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 216109 (VMware ESXi 6.0 Patch Release ESXi600-201603102-SG Missing (KB 2142184)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92870), SecurityFocus (BID 92324†) and SecurityTracker (ID 1036543†). The entries VDB-90565, VDB-90566 and VDB-90568 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Crlf injection
CWE: CWE-93 / CWE-74 / CWE-707
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: 92870
Nessus Name: VMware vCenter Server 6.0.x < 6.0u2 Unspecified HTTP Header Injection (VMSA-2016-0010)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56577
OpenVAS Name: VMSA-2016-0010 (CVE-2016-5331) ESXi: VMware product updates address multiple important security issues
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

06/07/2016 🔍
08/04/2016 +58 days 🔍
08/04/2016 +0 days 🔍
08/05/2016 +1 days 🔍
08/05/2016 +0 days 🔍
08/07/2016 +2 days 🔍
08/08/2016 +1 days 🔍
08/11/2016 +3 days 🔍
03/21/2019 +952 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: VMSA-2016-0010
Researcher: Vladimir Ivanov, Andrey Evlanin, Mikhail Stepankin, Artem Kondratenko, Arseniy Sharoglazov, Matt Foster, Matthias Deeg, Eva Esteban Molina, Ammarit Thongthua
Organization: Positive Technologies
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-5331 (🔍)
GCVE (CVE): GCVE-0-2016-5331
GCVE (VulDB): GCVE-100-90567
SecurityFocus: 92324 - VMware vCenter Server and ESXi CVE-2016-5331 HTTP Header Injection Vulnerability
SecurityTracker: 1036543

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

Entryinfo

Created: 08/08/2016 09:01
Updated: 03/21/2019 09:06
Changes: 08/08/2016 09:01 (72), 03/21/2019 09:06 (14)
Complete: 🔍
Cache ID: 216::103

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