Man-in-the-Middle Attack Risk in SSL Protocol Affecting Multiple Browsers
CVE-2011-3389
Key Information:
- Vendor
Opera
- Vendor
- CVE Published:
- 6 September 2011
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What is CVE-2011-3389?
The vulnerability in the SSL protocol enables man-in-the-middle attackers to exploit specific configurations in various web browsers and applications. By utilizing blockwise chosen-boundary attacks in combination with JavaScript APIs like HTML5 WebSocket, Java URLConnection, or Silverlight WebClient, attackers can potentially extract plaintext HTTP headers from encrypted HTTPS sessions. This type of attack, commonly referred to as a 'BEAST' attack, poses significant risks to secure communications.

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Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
Timeline
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Public PoC available
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Exploit known to exist
Vulnerability published
Vulnerability Reserved