CVE-2017-5384

Medium

Description

Proxy Auto-Config (PAC) files can specify a JavaScript function called for all URL requests with the full URL path which exposes more information than would be sent to the proxy itself in the case of HTTPS. Normally the Proxy Auto-Config file is specified by the user or machine owner and presumed to be non-malicious, but if a user has enabled Web Proxy Auto Detect (WPAD) this file can be served remotely. This vulnerability affects Firefox < 51.

SeverityMedium
CVSS5.9
Exploit probability74. percentile1.5%
ProductMozilla Firefox
PublishedJun 11, 2018
First seenJun 11, 2018

How to fix

Update
  • mozilla firefox51.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 51.051.0

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