Microsoft Internet Explorer access control

CVSS Meta Temp Score
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CTI Interest Score
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4.7$5k-$25k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer. It has been rated as critical. The affected element is an unknown function. This manipulation causes access control. The identification of this vulnerability is CVE-2017-8733. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Microsoft Internet Explorer (Web Browser) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to trick a user into believing that the user was visiting a legitimate website, due to the way that Internet Explorer handles specific HTML content, aka "Internet Explorer Spoofing Vulnerability".

The bug was discovered 09/12/2017. The weakness was shared 09/12/2017 by Masato Kinugawa with Cure53 as KB4038792 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-8733 since 05/03/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/12/2021). It is expected to see the exploit prices for this product decreasing in the near future.The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

A spoofing vulnerability exists when Internet Explorer improperly handles specific HTML content. An attacker who successfully exploited this vulnerability could trick a user into believing that the user was visiting a legitimate website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services.

The vulnerability scanner Nessus provides a plugin with the ID 103127 (Windows 7 and Windows Server 2008 R2 September 2017 Security Updates), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100319 (Microsoft Internet Explorer Security Update for September 2017).

Applying the patch KB4038792 is able to eliminate this problem. The bugfix is ready for download at catalog.update.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103127) and SecurityFocus (BID 100737†). The entries VDB-90685, VDB-90693, VDB-102453 and VDB-106482 are related to this item. 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: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.3
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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: 103127
Nessus Name: Windows 7 and Windows Server 2008 R2 September 2017 Security Updates
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802286
OpenVAS Name: Microsoft Internet Explorer Multiple Vulnerabilities (KB4036586)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB4038792

Timelineinfo

05/03/2017 🔍
09/12/2017 +132 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/13/2017 +1 days 🔍
01/12/2021 +1217 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4038792
Researcher: Masato Kinugawa
Organization: Cure53
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8733 (🔍)
GCVE (CVE): GCVE-0-2017-8733
GCVE (VulDB): GCVE-100-106519

OVAL: 🔍

SecurityFocus: 100737 - Microsoft Internet Explorer CVE-2017-8733 Spoofing Vulnerability
SecurityTracker: 1039328

See also: 🔍

Entryinfo

Created: 09/13/2017 14:29
Updated: 01/12/2021 10:33
Changes: 09/13/2017 14:29 (83), 11/15/2019 15:27 (13), 01/12/2021 10:33 (3)
Complete: 🔍
Cache ID: 216::103

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