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.

References

http://www.securityfocus.com/bid/95763

http://www.securitytracker.com/id/1037693

https://bugzilla.mozilla.org/show_bug.cgi?id=1255474

https://www.contextis.com//resources/blog/leaking-https-urls-20-year-old-vulnerability/

https://www.mozilla.org/security/advisories/mfsa2017-01/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2018-08-07

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM