Microsoft Internet Explorer 9/10/11 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 9/10/11. It has been rated as critical. This affects an unknown part. This manipulation causes memory corruption. This vulnerability appears as CVE-2017-0202. The attack may be initiated remotely. In addition, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 9/10/11 (Web Browser). It has been declared as critical. Affected by this vulnerability is an unknown function. 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 bug was discovered 04/11/2017. The weakness was presented 04/11/2017 by Ivan Fratric with Google Project Zero as KB4014661 / KB4015067 / KB4015217 / KB4015219 / KB4015221 / KB4015549 / KB4015550 / KB4015551 / KB4015583 / KB4015550 as confirmed knowledge base article (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-0202 since 09/09/2016. 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. Technical details are unknown but a public exploit is available.

A public exploit has been developed in HTML/Javascript and been published 3 weeks after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 99282 (KB4015219: Windows 10 Version 1511 April 2017 Cumulative Update), 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 100309 (Microsoft Internet Explorer Security Update for April 2017). The code used by the exploit is:

<style>
#details { transition-duration: 61s; }
</style>
<script>
function go() {
  document.fgColor = "foo";
  m.setAttribute("foo", "bar");
  document.head.innerHTML = "a";
}
</script>
<body onload=go()>
<details id="details">
<summary style="transform: scaleY(4)">
<marquee id="m" bgcolor="rgb(135,114,244)">aaaaaaaaaaaaa</marquee>
<style></style>

Applying a patch 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 Exploit-DB (41941), Tenable (99282), SecurityFocus (BID 97441†) and SecurityTracker (ID 1038238†). Additional details are provided at catalog.update.microsoft.com. See VDB-99655, VDB-99656, VDB-99657 and VDB-99658 for similar entries. 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: 6.9
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

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: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99282
Nessus Name: KB4015219: Windows 10 Version 1511 April 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800218
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4015583)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: catalog.update.microsoft.com

Timelineinfo

09/09/2016 🔍
04/11/2017 +214 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/12/2017 +1 days 🔍
04/12/2017 +0 days 🔍
04/12/2017 +0 days 🔍
04/27/2017 +15 days 🔍
04/27/2017 +0 days 🔍
12/23/2025 +3162 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4014661 / KB4015067 / KB4015217 / KB4015219 / KB4015221 / KB4015549 / KB4015550 / KB4015551 / KB4015583 / KB4015550
Researcher: Ivan Fratric
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-0202 (🔍)
GCVE (CVE): GCVE-0-2017-0202
GCVE (VulDB): GCVE-100-99673

OVAL: 🔍

SecurityFocus: 97441 - Microsoft Internet Explorer CVE-2017-0202 Remote Memory Corruption Vulnerability
OSVDB: - CVE-2017-0202 - Microsoft - Internet Explorer - Memory Corruption Issue
SecurityTracker: 1038238

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 04/12/2017 16:40
Updated: 12/23/2025 08:09
Changes: 04/12/2017 16:40 (91), 09/23/2020 18:20 (8), 11/28/2022 16:22 (4), 12/23/2025 08:09 (14)
Complete: 🔍
Cache ID: 216::103

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

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