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Vulnerability details: VCID-mfpe-rupt-aaac
Vulnerability ID VCID-mfpe-rupt-aaac
Aliases CVE-2019-9812
Summary Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered. This vulnerability affects Firefox ESR < 60.9, Firefox ESR < 68.1, and Firefox < 69.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-250 Execution with Unnecessary Privileges
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9812.html
rhas Important https://access.redhat.com/errata/RHSA-2019:2663
rhas Important https://access.redhat.com/errata/RHSA-2019:2694
rhas Important https://access.redhat.com/errata/RHSA-2019:2729
cvssv3 9.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9812.json
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
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epss 0.0052 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00526 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00627 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00627 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00627 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.00638 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
epss 0.01761 https://api.first.org/data/v1/epss?cve=CVE-2019-9812
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1748660
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11740
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11742
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11743
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11744
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11746
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11752
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9812
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.8 https://nvd.nist.gov/vuln/detail/CVE-2019-9812
cvssv3 9.3 https://nvd.nist.gov/vuln/detail/CVE-2019-9812
cvssv3.1 9.3 https://nvd.nist.gov/vuln/detail/CVE-2019-9812
archlinux High https://security.archlinux.org/AVG-1036
generic_textual Medium https://ubuntu.com/security/notices/USN-4122-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-4122-1
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-25
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-9812
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-26
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2019-27
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9812.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9812.json
https://api.first.org/data/v1/epss?cve=CVE-2019-9812
https://bugzilla.mozilla.org/show_bug.cgi?id=1538008
https://bugzilla.mozilla.org/show_bug.cgi?id=1538015
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11740
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11742
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11743
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11744
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11746
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11752
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9812
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://ubuntu.com/security/notices/USN-4122-1
https://usn.ubuntu.com/usn/usn-4122-1
https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-9812
https://www.mozilla.org/security/advisories/mfsa2019-25/
https://www.mozilla.org/security/advisories/mfsa2019-26/
https://www.mozilla.org/security/advisories/mfsa2019-27/
1748660 https://bugzilla.redhat.com/show_bug.cgi?id=1748660
ASA-201909-2 https://security.archlinux.org/ASA-201909-2
AVG-1036 https://security.archlinux.org/AVG-1036
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:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
CVE-2019-9812 https://nvd.nist.gov/vuln/detail/CVE-2019-9812
mfsa2019-25 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25
mfsa2019-26 https://www.mozilla.org/en-US/security/advisories/mfsa2019-26
mfsa2019-27 https://www.mozilla.org/en-US/security/advisories/mfsa2019-27
RHSA-2019:2663 https://access.redhat.com/errata/RHSA-2019:2663
RHSA-2019:2694 https://access.redhat.com/errata/RHSA-2019:2694
RHSA-2019:2729 https://access.redhat.com/errata/RHSA-2019:2729
USN-4122-1 https://usn.ubuntu.com/4122-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-9812.json
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: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:N/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-9812
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:C/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-9812
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:C/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-9812
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 0.64186
EPSS Score 0.0052
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.