CVE-2017-5384: Infoleak
First published: Tue Jan 24 2017(Updated: )
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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Firefox | <51 | 51 |
| Firefox | <51.0 |
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Reference Links
- 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/en-US/security/advisories/mfsa2017-01/
- http://www.securityfocus.com/bid/95763
- http://www.securitytracker.com/id/1037693
- https://www.mozilla.org/security/advisories/mfsa2017-01/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2017-5375
- CVE-2017-5376
- CVE-2017-5377
- CVE-2017-5378
- CVE-2017-5379
- CVE-2017-5380
- CVE-2017-5390
- CVE-2017-5389
- CVE-2017-5396
- CVE-2017-5381
- CVE-2017-5382
- CVE-2017-5383
- CVE-2017-5384
- CVE-2017-5385
- CVE-2017-5386
- CVE-2017-5394
- CVE-2017-5391
- CVE-2017-5392
- CVE-2017-5393
- CVE-2017-5395
- CVE-2017-5387
- CVE-2017-5388
- CVE-2017-5374
- CVE-2017-5373
Frequently Asked Questions
What is the severity of CVE-2017-5384?
CVE-2017-5384 is classified as a medium severity vulnerability.
How do I fix CVE-2017-5384?
To fix CVE-2017-5384, upgrade to Mozilla Firefox version 52 or later.
Which versions of Mozilla Firefox are affected by CVE-2017-5384?
CVE-2017-5384 affects Mozilla Firefox versions prior to 52.
What type of vulnerability is CVE-2017-5384?
CVE-2017-5384 is a vulnerability in Proxy Auto-Config files that can expose sensitive URL information.
How does CVE-2017-5384 impact users' privacy?
CVE-2017-5384 can compromise users' privacy by leaking full HTTPS URL paths to the proxy.
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