Description
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.
Metrics
CVSS 3.0 5.3/10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/Technical Description
- http://www.securityfocus.com/bid/92773
- http://www.securitytracker.com/id/1036741
- http://www.securitytracker.com/id/1036742
- http://www.securitytracker.com/id/1036743
- http://www.securitytracker.com/id/1036744
- http://www.securitytracker.com/id/1036745
- http://www.securitytracker.com/id/1036746
- https://tom.vg/papers/heist_blackhat2016.pdfTechnical Description
- http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/Technical Description
- http://www.securityfocus.com/bid/92773
- http://www.securitytracker.com/id/1036741
- http://www.securitytracker.com/id/1036742
- http://www.securitytracker.com/id/1036743
- http://www.securitytracker.com/id/1036744
- http://www.securitytracker.com/id/1036745
- http://www.securitytracker.com/id/1036746
- https://tom.vg/papers/heist_blackhat2016.pdfTechnical Description
Timeline
- Published
- Sep 6, 2016
- Last modified
- Jun 17, 2026
- NVD status
- Modified