Microsoft Edge IE Mode redirect

Summaryinfo

A vulnerability described as critical has been identified in Microsoft Edge. This impacts an unknown function of the component IE Mode. Such manipulation leads to redirect. This vulnerability is listed as CVE-2020-1220. The attack may be performed from remote. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Edge (Web Browser) (unknown version) and classified as critical. Affected by this issue is an unknown code block of the component IE Mode. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A spoofing vulnerability exists when theMicrosoft Edge (Chromium-based) in IE Mode improperly handles specific redirects, aka 'Microsoft Edge (Chromium-based) in IE Mode Spoofing Vulnerability'.

The weakness was presented 06/09/2020 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2020-1220. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/10/2020). The MITRE ATT&CK project declares the attack technique as T1204.001. The advisory points out:

A spoofing vulnerability exists when theMicrosoft Edge (Chromium-based) in IE Mode improperly handles specific redirects. An attacker who successfully exploits the IE Mode vulnerability could trick a user into believing that the user was on a legitimate website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

See VDB-156307 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Microsoft

Name

• Edge

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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Once again VulDB remains the best source for vulnerability data.

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