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Vulnerability details: VCID-6n3h-w31r-aaag
Vulnerability ID VCID-6n3h-w31r-aaag
Aliases CVE-2020-6809
Summary When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-552 Files or Directories Accessible to External Parties
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-6809.html
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6809.json
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00178 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
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epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00815 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.00815 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
epss 0.01471 https://api.first.org/data/v1/epss?cve=CVE-2020-6809
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1829343
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6809
cvssv3.1 6.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-6809
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-6809
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-6809
archlinux Critical https://security.archlinux.org/AVG-1112
generic_textual Medium https://ubuntu.com/security/notices/USN-4299-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-4299-1
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-08
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6809
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-6809.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6809.json
https://api.first.org/data/v1/epss?cve=CVE-2020-6809
https://bugzilla.mozilla.org/show_bug.cgi?id=1420296
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6809
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://ubuntu.com/security/notices/USN-4299-1
https://usn.ubuntu.com/usn/usn-4299-1
https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6809
https://www.mozilla.org/security/advisories/mfsa2020-08/
1829343 https://bugzilla.redhat.com/show_bug.cgi?id=1829343
ASA-202003-8 https://security.archlinux.org/ASA-202003-8
AVG-1112 https://security.archlinux.org/AVG-1112
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-2020-6809 https://nvd.nist.gov/vuln/detail/CVE-2020-6809
mfsa2020-08 https://www.mozilla.org/en-US/security/advisories/mfsa2020-08
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-6809.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: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6809
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6809
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-6809
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 0.55680
EPSS Score 0.00178
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.