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Vulnerability details: VCID-rbnm-pmqn-aaaf
Vulnerability ID VCID-rbnm-pmqn-aaaf
Aliases CVE-2021-23985
Summary If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87.
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 Low http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23985.html
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00419 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00419 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.00419 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
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epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.0051 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
epss 0.01105 https://api.first.org/data/v1/epss?cve=CVE-2021-23985
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23985
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-2021-23985
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23985
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23985
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 Low https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-23985
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-23985.html
https://api.first.org/data/v1/epss?cve=CVE-2021-23985
https://bugzilla.mozilla.org/show_bug.cgi?id=1659129
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23985
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-2021-23985
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-2021-23985 https://nvd.nist.gov/vuln/detail/CVE-2021-23985
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: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:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23985
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-2021-23985
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-2021-23985
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 0.70359
EPSS Score 0.00307
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.