If a server sends two Strict-Transport-Security (STS) headers for a single connection, they will be rejected as invalid and HTTP Strict Transport Security (HSTS) will not be enabled for the connection. This vulnerability affects Firefox < 55.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 55.0 (excluding) |
| Firefox | Ubuntu | devel | * |
| Firefox | Ubuntu | trusty | * |
| Firefox | Ubuntu | upstream | * |
| Firefox | Ubuntu | xenial | * |
| Firefox | Ubuntu | yakkety | * |
| Firefox | Ubuntu | zesty | * |
References
- http://www.securityfocus.com/bid/100374
- http://www.securitytracker.com/id/1039124
- https://bugzilla.mozilla.org/show_bug.cgi?id=1074642
- https://www.mozilla.org/security/advisories/mfsa2017-18/
- http://www.securityfocus.com/bid/100374
- http://www.securitytracker.com/id/1039124
- https://bugzilla.mozilla.org/show_bug.cgi?id=1074642
- https://www.mozilla.org/security/advisories/mfsa2017-18/