Microsoft Internet Explorer 9/10 on Server 2008/Server 2012 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 9/10 on Server 2008/Server 2012 and classified as critical. This issue affects some unknown processing. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2017-8651. The attack can be launched remotely. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 9/10 on Server 2008/Server 2012 (Web Browser). Affected by this issue is an unknown code. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Internet Explorer in Microsoft Windows Server 2008 SP2 and Windows Server 2012 allows an attacker to execute arbitrary code in the context of the current user due to Internet Explorer improperly accessing objects in memory, aka "Internet Explorer Memory Corruption Vulnerability".

The bug was discovered 08/08/2017. The weakness was disclosed 08/08/2017 by Hui Gao with Palo Alto Networks as KB4034733 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2017-8651 since 05/03/2017. 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 current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/05/2019). 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 102268 (Windows Server 2012 August 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 100317 (Microsoft Internet Explorer Security Update for August 2017).

Applying the patch KB4034733 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 (102268) and SecurityFocus (BID 100058†). The entries VDB-105015 and VDB-105045 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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

Vendor Base Score (Microsoft): 3.1
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102268
Nessus Name: Windows Server 2012 August 2017 Security Updates
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802286
OpenVAS Name: Microsoft Internet Explorer Multiple Vulnerabilities (KB4034733)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Patch: KB4034733

Timelineinfo

05/03/2017 🔍
08/08/2017 +97 days 🔍
08/08/2017 +0 days 🔍
08/08/2017 +0 days 🔍
08/08/2017 +0 days 🔍
08/08/2017 +0 days 🔍
08/08/2017 +0 days 🔍
08/09/2017 +1 days 🔍
11/05/2019 +818 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4034733
Researcher: Hui Gao
Organization: Palo Alto Networks
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8651 (🔍)
GCVE (CVE): GCVE-0-2017-8651
GCVE (VulDB): GCVE-100-105032

OVAL: 🔍

SecurityFocus: 100058 - Microsoft Internet Explorer CVE-2017-8651 Remote Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 08/09/2017 12:05
Updated: 11/05/2019 08:23
Changes: 08/09/2017 12:05 (92), 11/05/2019 08:23 (7)
Complete: 🔍
Cache ID: 216::103

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