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K
zdiSimon Zuckerbraun of Trend Micro Zero Day InitiativeZDI-18-1134
HistoryOct 10, 2018 - 12:00 a.m.

Microsoft Internet Explorer WebCrypto importKey Use-After-Free Information Disclosure Vulnerability

2018-10-1000:00:00
Simon Zuckerbraun of Trend Micro Zero Day Initiative
www.zerodayinitiative.com
26
internet explorer
webcrypto
importkey
use-after-free
information disclosure
vulnerability
remote attack
sensitive information
user interaction
malicious file
javascript
pointer reuse
code execution

EPSS

0.137

Percentile

95.7%

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 imported keys in WebCrypto. By performing actions in JavaScript, an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.