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Vulnerability details: VCID-s9ag-eq6m-aaan
Vulnerability ID VCID-s9ag-eq6m-aaan
Aliases CVE-2021-23956
Summary An ambiguous file picker design could have confused users who intended to select and upload a single file into uploading a whole directory. This was addressed by adding a new prompt. This vulnerability affects Firefox < 85.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23956.html
epss 0.00211 https://api.first.org/data/v1/epss?cve=CVE-2021-23956
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epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-23956
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-23956
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-23956
epss 0.01379 https://api.first.org/data/v1/epss?cve=CVE-2021-23956
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23956
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-23956
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23956
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23956
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-2021-23956
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23956.html
https://api.first.org/data/v1/epss?cve=CVE-2021-23956
https://bugzilla.mozilla.org/show_bug.cgi?id=1338637
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23956
https://ubuntu.com/security/notices/USN-4717-1
https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23956
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-2021-23956 https://nvd.nist.gov/vuln/detail/CVE-2021-23956
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:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23956
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:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23956
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:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23956
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 0.58673
EPSS Score 0.00211
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.