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Vulnerability details: VCID-bb8u-efdv-aaaa
Vulnerability ID VCID-bb8u-efdv-aaaa
Aliases CVE-2021-24000
Summary A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting with one tab when they believed they were on a separate tab. In conjunction with certain elements (such as &lt;input type="file"&gt;) this could have led to an attack where a user was confused about the origin of the webpage and potentially disclosed information they did not intend to. This vulnerability affects Firefox < 88.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-24000.html
epss 0.00084 https://api.first.org/data/v1/epss?cve=CVE-2021-24000
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epss 0.00483 https://api.first.org/data/v1/epss?cve=CVE-2021-24000
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24000
cvssv3.1 3.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 2.6 https://nvd.nist.gov/vuln/detail/CVE-2021-24000
cvssv3 3.1 https://nvd.nist.gov/vuln/detail/CVE-2021-24000
cvssv3.1 3.1 https://nvd.nist.gov/vuln/detail/CVE-2021-24000
archlinux High https://security.archlinux.org/AVG-1834
generic_textual Medium https://ubuntu.com/security/notices/USN-4926-1
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-16
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-24000
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-24000.html
https://api.first.org/data/v1/epss?cve=CVE-2021-24000
https://bugzilla.mozilla.org/show_bug.cgi?id=1694698
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24000
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://ubuntu.com/security/notices/USN-4926-1
https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-24000
https://www.mozilla.org/security/advisories/mfsa2021-16/
ASA-202104-3 https://security.archlinux.org/ASA-202104-3
AVG-1834 https://security.archlinux.org/AVG-1834
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-2021-24000 https://nvd.nist.gov/vuln/detail/CVE-2021-24000
mfsa2021-16 https://www.mozilla.org/en-US/security/advisories/mfsa2021-16
USN-4926-1 https://usn.ubuntu.com/4926-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N 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:H/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-24000
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:H/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-24000
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:H/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-24000
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 0.36991
EPSS Score 0.00084
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.