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Vulnerability details: VCID-pesx-f8ux-aaag
Vulnerability ID VCID-pesx-f8ux-aaag
Aliases CVE-2021-23955
Summary The browser could have been confused into transferring a pointer lock state into another tab, which could have lead to clickjacking attacks. This vulnerability affects Firefox < 85.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-1021 Improper Restriction of Rendered UI Layers or Frames
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23955.html
epss 0.00074 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
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epss 0.00074 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
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epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
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epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
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epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
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epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
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epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00238 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
epss 0.00468 https://api.first.org/data/v1/epss?cve=CVE-2021-23955
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23955
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-23955
cvssv3 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-23955
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-23955
archlinux High https://security.archlinux.org/AVG-1492
generic_textual Medium https://ubuntu.com/security/notices/USN-4717-1
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-03
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23955
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23955.html
https://api.first.org/data/v1/epss?cve=CVE-2021-23955
https://bugzilla.mozilla.org/show_bug.cgi?id=1684837
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23955
https://ubuntu.com/security/notices/USN-4717-1
https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23955
https://www.mozilla.org/security/advisories/mfsa2021-03/
ASA-202102-1 https://security.archlinux.org/ASA-202102-1
AVG-1492 https://security.archlinux.org/AVG-1492
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-2021-23955 https://nvd.nist.gov/vuln/detail/CVE-2021-23955
GLSA-202102-01 https://security.gentoo.org/glsa/202102-01
mfsa2021-03 https://www.mozilla.org/en-US/security/advisories/mfsa2021-03
USN-4717-1 https://usn.ubuntu.com/4717-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23955
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:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23955
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:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23955
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 0.34394
EPSS Score 0.00074
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.