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Vulnerability details: VCID-wsn5-d92g-7bdp
Vulnerability ID VCID-wsn5-d92g-7bdp
Aliases CVE-2017-5384
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
System Score Found at
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-5384
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2017-5384
cvssv3 5.9 https://nvd.nist.gov/vuln/detail/CVE-2017-5384
archlinux Critical https://security.archlinux.org/AVG-157
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-5384
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/
http://www.securityfocus.com/bid/95763
http://www.securitytracker.com/id/1037693
ASA-201701-39 https://security.archlinux.org/ASA-201701-39
AVG-157 https://security.archlinux.org/AVG-157
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
CVE-2017-5384 https://nvd.nist.gov/vuln/detail/CVE-2017-5384
mfsa2017-01 https://www.mozilla.org/en-US/security/advisories/mfsa2017-01
USN-3175-1 https://usn.ubuntu.com/3175-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5384
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5384
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.7319
EPSS Score 0.00805
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:22.556210+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-01.yml 37.0.0