Microsoft Internet Explorer 8 on Win7 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 8 on Win7. This vulnerability affects unknown code. This manipulation causes memory corruption. This vulnerability is registered as CVE-2011-1346. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Microsoft Internet Explorer 8 on Win7 (Web Browser) and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to execute arbitrary code via unknown vectors, as demonstrated by Stephen Fewer as the second of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011.

The issue has been introduced in 03/05/2008. The weakness was published 03/10/2011 as MS11-018 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is known as CVE-2011-1346. 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. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/19/2021). It is expected to see the exploit prices for this product decreasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 1100 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100098 (Microsoft Internet Explorer 8 Multiple Unspecified Vulnerabilities (Deprecated)).

Upgrading to version 9 or 10 eliminates this vulnerability. Applying the patch MS11-018 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (66063), SecurityFocus (BID 46821†) and Vulnerability Center (SBV-30610†). Similar entries are available at VDB-4340, VDB-55988, VDB-56786 and VDB-56784. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

CVSSv2info

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VulDB Base Score: 🔍
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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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Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Internet Explorer 9/10
Patch: MS11-018

Timelineinfo

03/05/2008 🔍
03/09/2011 +1099 days 🔍
03/10/2011 +0 days 🔍
03/10/2011 +0 days 🔍
03/10/2011 +0 days 🔍
03/22/2011 +12 days 🔍
03/20/2015 +1459 days 🔍
10/19/2021 +2405 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS11-018
Status: Confirmed

CVE: CVE-2011-1346 (🔍)
GCVE (CVE): GCVE-0-2011-1346
GCVE (VulDB): GCVE-100-56785
X-Force: 66063
SecurityFocus: 46821
Vulnerability Center: 30610 - Microsoft Internet Explorer 8 on Windows 7 Unspecified Remote Code Execution Vulnerability (2), Critical

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 10/19/2021 11:06
Changes: 03/20/2015 16:16 (47), 04/07/2017 12:10 (13), 10/19/2021 10:59 (1), 10/19/2021 11:06 (7)
Complete: 🔍
Cache ID: 216:EEA:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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