CVE-2019-13321: (Pwn2Own) Xiaomi Browser Captive Portal WebView Authorization Bypass Vulnerability
This vulnerability allows network adjacent attackers to execute arbitrary code on affected installations of Xiaomi Browser Prior to 10.4.0. User interaction is required to exploit this vulnerability in that the target must connect to a malicious access point. The specific flaw exists within the handling of HTTP responses to the Captive Portal. A crafted HTML response can cause the Captive Portal to to open a browser to a specified location without user interaction. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7467.
Other sources
This vulnerability allows network adjacent attackers to execute arbitrary code on affected installations of Xiaomi Mi6. User interaction is required to exploit this vulnerability in that the target must connect to a malicious access point. The specific flaw exists within the handling of HTTP responses to the Captive Portal. A crafted HTML response can cause the Captive Portal to to open a browser to a specified location without user interaction. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID of this vulnerability is CVE-2019-13321.
What is the affected software?
The affected software is Xiaomi Browser prior to version 10.4.0.
What is the severity of CVE-2019-13321?
The severity of CVE-2019-13321 is high with a severity value of 8.
How does this vulnerability work?
This vulnerability allows network adjacent attackers to execute arbitrary code on affected installations of Xiaomi Browser prior to version 10.4.0 by exploiting a flaw within the handling of captive portal WebView authorization.
Is user interaction required to exploit CVE-2019-13321?
Yes, user interaction is required to exploit CVE-2019-13321 as the target must connect to a malicious access point.