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Vulnerability details: VCID-3kra-bb93-aaan
Vulnerability ID VCID-3kra-bb93-aaan
Aliases CVE-2021-23983
Summary By causing a transition on a parent node by removing a CSS rule, an invalid property for a marker could have been applied, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 87.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-787 Out-of-bounds Write
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23983.html
epss 0.00091 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
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epss 0.00091 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00091 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
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epss 0.00091 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00366 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00366 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
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epss 0.00366 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00366 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00366 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00366 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
epss 0.00587 https://api.first.org/data/v1/epss?cve=CVE-2021-23983
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23983
cvssv3.1 6.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-23983
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23983
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23983
archlinux High https://security.archlinux.org/AVG-1728
generic_textual Medium https://ubuntu.com/security/notices/USN-4893-1
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-10
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-23983
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23983.html
https://api.first.org/data/v1/epss?cve=CVE-2021-23983
https://bugzilla.mozilla.org/show_bug.cgi?id=1692684
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23983
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://ubuntu.com/security/notices/USN-4893-1
https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-23983
https://www.mozilla.org/security/advisories/mfsa2021-10/
AVG-1728 https://security.archlinux.org/AVG-1728
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-2021-23983 https://nvd.nist.gov/vuln/detail/CVE-2021-23983
mfsa2021-10 https://www.mozilla.org/en-US/security/advisories/mfsa2021-10
USN-4893-1 https://usn.ubuntu.com/4893-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H 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:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23983
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:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23983
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:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23983
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 0.40060
EPSS Score 0.00091
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.