Microsoft Internet Explorer 11 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft Internet Explorer 11. Affected is an unknown function. The manipulation results in memory corruption. This vulnerability is known as CVE-2017-11813. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 11 (Web Browser). It has been classified as critical. Affected is an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 10/10/2017. The weakness was published 10/10/2017 by Atte Kettunen as KB4041693 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is traded as CVE-2017-11813 since 07/31/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/16/2021). It is expected to see the exploit prices for this product decreasing in the near future. The advisory points out:

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability scanner Nessus provides a plugin with the ID 103746 (Windows 7 and Windows Server 2008 R2 October 2017 Security Updates (KRACK)), 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 100320 (Microsoft Internet Explorer Security Update for October 2017).

Applying the patch KB4041693 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 (103746) and SecurityFocus (BID 101083†). Similar entries are available at VDB-107699, VDB-107706, VDB-107719 and VDB-107724. Once again VulDB remains the best 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: 7.1
VulDB Meta Temp Score: 7.0

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

Vendor Base Score (Microsoft): 7.5
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 103746
Nessus Name: Windows 7 and Windows Server 2008 R2 October 2017 Security Updates (KRACK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802286
OpenVAS Name: Microsoft Internet Explorer Multiple Vulnerabilities (KB4040685)
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: KB4041693

Timelineinfo

07/31/2017 🔍
10/10/2017 +71 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/11/2017 +1 days 🔍
10/13/2017 +2 days 🔍
01/16/2021 +1191 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4041693
Researcher: Atte Kettunen
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11813 (🔍)
GCVE (CVE): GCVE-0-2017-11813
GCVE (VulDB): GCVE-100-107700

OVAL: 🔍

SecurityFocus: 101083 - Microsoft Internet Explorer CVE-2017-11813 Remote Memory Corruption Vulnerability
SecurityTracker: 1039532

See also: 🔍

Entryinfo

Created: 10/11/2017 23:38
Updated: 01/16/2021 09:21
Changes: 10/11/2017 23:38 (88), 11/23/2019 16:48 (6), 01/16/2021 09:21 (3)
Complete: 🔍
Cache ID: 216::103

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