Microsoft Internet Explorer CHtmTag Use-After-Free Remote Code Execution VulnerabilityZDI-17-169: March 21st, 2017
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 25485. For further product information on the TippingPoint IPS:
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.
Vendor ResponseMicrosoft has issued an update to correct this vulnerability. More details can be found at:
2016-10-06 - Vulnerability reported to vendor
2017-03-21 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Kai Song(exp-sky) of Tencent's Xuanwu Lab