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Vulnerability details: VCID-ympr-e8tq-aaak
Vulnerability ID VCID-ympr-e8tq-aaak
Aliases CVE-2021-23988
Summary Mozilla developers reported memory safety bugs present in Firefox 86. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. 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-2021-23988.html
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2021-23988
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epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-23988
epss 0.00953 https://api.first.org/data/v1/epss?cve=CVE-2021-23988
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23988
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-23988
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-23988
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-23988
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-2021-23988
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23988.html
https://api.first.org/data/v1/epss?cve=CVE-2021-23988
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1684994%2C1686653
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23988
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-2021-23988
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-2021-23988 https://nvd.nist.gov/vuln/detail/CVE-2021-23988
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:H/I:H/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:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23988
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:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23988
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:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23988
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 0.56384
EPSS Score 0.00184
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.