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Vulnerability details: VCID-b4aj-xvw7-aaad
Vulnerability ID VCID-b4aj-xvw7-aaad
Aliases CVE-2018-5152
Summary WebExtensions with the appropriate permissions can attach content scripts to Mozilla sites such as accounts.firefox.com and listen to network traffic to the site through the "webRequest" API. For example, this allows for the interception of username and an encrypted password during login to Firefox Accounts. This issue does not expose synchronization traffic directly and is limited to the process of user login to the website and the data displayed to the user once logged in. This vulnerability affects Firefox < 60.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-5152.html
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5152.json
epss 0.00374 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00374 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00389 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
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epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
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epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
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epss 0.00425 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.005 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00545 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00545 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00545 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00545 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
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epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
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epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
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epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00633 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
epss 0.00658 https://api.first.org/data/v1/epss?cve=CVE-2018-5152
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1576252
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5152
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-5152
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2018-5152
archlinux Critical https://security.archlinux.org/AVG-693
generic_textual Medium https://ubuntu.com/security/notices/USN-3645-1
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-11
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/#CVE-2018-5152
cvssv3.1 8.8 http://www.securitytracker.com/id/1040896
generic_textual HIGH http://www.securitytracker.com/id/1040896
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-5152.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5152.json
https://api.first.org/data/v1/epss?cve=CVE-2018-5152
https://bugzilla.mozilla.org/show_bug.cgi?id=1415644
https://bugzilla.mozilla.org/show_bug.cgi?id=1427289
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5152
https://ubuntu.com/security/notices/USN-3645-1
https://usn.ubuntu.com/3645-1/
https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/#CVE-2018-5152
https://www.mozilla.org/security/advisories/mfsa2018-11/
http://www.securityfocus.com/bid/104139
http://www.securitytracker.com/id/1040896
1576252 https://bugzilla.redhat.com/show_bug.cgi?id=1576252
ASA-201805-10 https://security.archlinux.org/ASA-201805-10
AVG-693 https://security.archlinux.org/AVG-693
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:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
CVE-2018-5152 https://nvd.nist.gov/vuln/detail/CVE-2018-5152
mfsa2018-11 https://www.mozilla.org/en-US/security/advisories/mfsa2018-11
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5152.json
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
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-5152
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:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-5152
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
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at http://www.securitytracker.com/id/1040896
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 0.58359
EPSS Score 0.00374
Published At June 2, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.