The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a "HEIST" attack.
2016-09-06T10:59:01.493
2025-04-12T10:46:40.837
Deferred
CVSSv3.0: 5.3 (MEDIUM)
AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | microsoft | edge | - | Yes |
Application | microsoft | internet_explorer | - | Yes |
Application | chrome | - | Yes | |
Application | apple | safari | * | Yes |
Application | opera | opera_browser | - | Yes |
Application | mozilla | firefox | * | Yes |