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CVE-2017-5384

N/A

Published: June 11, 2018 at 09:00 PM UTC

Updated: June 17, 2026 at 01:20 AM UTC

1 product affected across 1 vendorFirefox

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Severity

N/A

Exploit prediction

EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox · Mozilla

95%

v < 51

Affected range stops below 51, so it looks safe — our inference, not a vendor statement

Affected range stops below 51.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

VDB Entryx_refsource_BIDThird Party Advisory

Source: [email protected]

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

VDB Entryx_refsource_SECTRACKThird Party Advisory

Source: [email protected]

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

x_refsource_CONFIRMIssue TrackingPatchVendor Advisory

Source: [email protected]

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

x_refsource_MISCExploitTechnical DescriptionThird Party Advisory

Source: [email protected]

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

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

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

CVSS

4.3MEDIUM[email protected]

Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200

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