Advisory Details

April 19th, 2018

Microsoft Edge CSS Custom Property Type Confusion Information Disclosure Vulnerability

CVE ID	CVE-2018-0763
CVSS SCORE	2.6, AV:N/AC:H/Au:N/C:P/I:N/A:N
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Edge
VULNERABILITY DETAILS	This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Edge. 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 handling of custom properties in CSS. By manipulating a document's elements, an attacker can trigger a type confusion condition. An attacker may be able to leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0763
DISCLOSURE TIMELINE	2017-11-07 - Vulnerability reported to vendor 2018-04-19 - Coordinated public release of advisory 2018-04-19 - Advisory Updated
CREDIT	@j00sean (Thanks to Domato: https://github.com/google/domato)

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