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K
zdiKai Song(exp-sky) of Tencent's Xuanwu LabZDI-17-169
HistoryMar 21, 2017 - 12:00 a.m.

Microsoft Internet Explorer CHtmTag Use-After-Free Remote Code Execution Vulnerability

2017-03-2100:00:00
Kai Song(exp-sky) of Tencent's Xuanwu Lab
www.zerodayinitiative.com
12

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

7.6 High

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:H/Au:N/C:C/I:C/A:C

0.207 Low

EPSS

Percentile

96.4%

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of HTML tags. By manipulating a document’s elements an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to disclose sensitive information under the context of the current process.

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

7.6 High

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:H/Au:N/C:C/I:C/A:C

0.207 Low

EPSS

Percentile

96.4%