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Vulnerability details: VCID-8btd-mrd4-aaaj
Vulnerability ID VCID-8btd-mrd4-aaaj
Aliases CVE-2020-12395
Summary Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. 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 ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-787 Out-of-bounds Write
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-12395.html
rhas Critical https://access.redhat.com/errata/RHSA-2020:2031
rhas Critical https://access.redhat.com/errata/RHSA-2020:2032
rhas Critical https://access.redhat.com/errata/RHSA-2020:2033
rhas Critical https://access.redhat.com/errata/RHSA-2020:2036
rhas Critical https://access.redhat.com/errata/RHSA-2020:2037
rhas Critical https://access.redhat.com/errata/RHSA-2020:2046
rhas Critical https://access.redhat.com/errata/RHSA-2020:2047
rhas Critical https://access.redhat.com/errata/RHSA-2020:2048
rhas Critical https://access.redhat.com/errata/RHSA-2020:2049
rhas Critical https://access.redhat.com/errata/RHSA-2020:2050
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12395.json
epss 0.00753 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
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epss 0.00753 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
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epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
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epss 0.01231 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
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epss 0.01231 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
epss 0.01231 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
epss 0.01231 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
epss 0.01231 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
epss 0.03284 https://api.first.org/data/v1/epss?cve=CVE-2020-12395
rhbs urgent https://bugzilla.redhat.com/show_bug.cgi?id=1831765
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12387
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12392
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12395
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12397
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6831
cvssv2 10.0 https://nvd.nist.gov/vuln/detail/CVE-2020-12395
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2020-12395
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2020-12395
archlinux Critical https://security.archlinux.org/AVG-1148
archlinux Critical https://security.archlinux.org/AVG-1155
generic_textual Medium https://ubuntu.com/security/notices/USN-4353-1
generic_textual Medium https://ubuntu.com/security/notices/USN-4373-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-4353-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-4373-1
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2020-16
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/#CVE-2020-12395
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2020-17
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-12395
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2020-18
generic_textual Medium https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-12395
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-12395.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12395.json
https://api.first.org/data/v1/epss?cve=CVE-2020-12395
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12387
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12392
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12395
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12397
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6831
https://security.gentoo.org/glsa/202005-03
https://security.gentoo.org/glsa/202005-04
https://ubuntu.com/security/notices/USN-4353-1
https://ubuntu.com/security/notices/USN-4373-1
https://usn.ubuntu.com/4373-1/
https://usn.ubuntu.com/usn/usn-4353-1
https://usn.ubuntu.com/usn/usn-4373-1
https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/#CVE-2020-12395
https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-12395
https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-12395
https://www.mozilla.org/security/advisories/mfsa2020-16/
https://www.mozilla.org/security/advisories/mfsa2020-17/
https://www.mozilla.org/security/advisories/mfsa2020-18/
1831765 https://bugzilla.redhat.com/show_bug.cgi?id=1831765
ASA-202005-3 https://security.archlinux.org/ASA-202005-3
ASA-202005-7 https://security.archlinux.org/ASA-202005-7
AVG-1148 https://security.archlinux.org/AVG-1148
AVG-1155 https://security.archlinux.org/AVG-1155
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:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
CVE-2020-12395 https://nvd.nist.gov/vuln/detail/CVE-2020-12395
mfsa2020-16 https://www.mozilla.org/en-US/security/advisories/mfsa2020-16
mfsa2020-17 https://www.mozilla.org/en-US/security/advisories/mfsa2020-17
mfsa2020-18 https://www.mozilla.org/en-US/security/advisories/mfsa2020-18
RHSA-2020:2031 https://access.redhat.com/errata/RHSA-2020:2031
RHSA-2020:2032 https://access.redhat.com/errata/RHSA-2020:2032
RHSA-2020:2033 https://access.redhat.com/errata/RHSA-2020:2033
RHSA-2020:2036 https://access.redhat.com/errata/RHSA-2020:2036
RHSA-2020:2037 https://access.redhat.com/errata/RHSA-2020:2037
RHSA-2020:2046 https://access.redhat.com/errata/RHSA-2020:2046
RHSA-2020:2047 https://access.redhat.com/errata/RHSA-2020:2047
RHSA-2020:2048 https://access.redhat.com/errata/RHSA-2020:2048
RHSA-2020:2049 https://access.redhat.com/errata/RHSA-2020:2049
RHSA-2020:2050 https://access.redhat.com/errata/RHSA-2020:2050
USN-4353-1 https://usn.ubuntu.com/4353-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12395.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: AV:N/AC:L/Au:N/C:C/I:C/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12395
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:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12395
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:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12395
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 0.81436
EPSS Score 0.00753
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.