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CVE-2017-7789

Medium

Description

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.

SeverityMedium
CVSS5.3
Exploit probability—
ProductMozilla Firefox
PublishedJun 11, 2018
First seenJun 11, 2018

How to fix

Update
  • mozilla firefox55.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 55.055.0

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Choose the product and enter the version you run to see whether it falls in the affected range.

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