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TI-2019-12700 Aliases CVE-2019-17017GHSA-6m7f-wqg6-qgm2

Type confusion in Mozilla Firefox ESR

Priority MEDIUM 43CWE-843Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 15 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-843 and the CVSS impact.

Summary

Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.

Why it matters now

EPSS 0.02489 84th percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 68.4Firefox (Mozilla): 72Red Hat: 8 advisoriesRed Hat: 15 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 68.468.4Patch availableCNA
MozillaFirefoxbefore 7272Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 68.4 Fixed in 68.4 Patch available CNA
  • Firefox VendorMozilla Affected before 72 Fixed in 72 Patch available CNA

CPE configurations NVD · 17

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 72.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 68.4VulnerableMozilla
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*19.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*19.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 72.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 68.4 Vulnerable ·Mozilla
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 68.4
  • Fix · CNA Firefox (Mozilla) Fixed in 72

Red Hat 8 advisories

  • RHSA-2020:0295 Released 2020-01-30 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.0) firefox-68.4.1-1.el8_0
  • RHSA-2020:0292 Released 2020-01-30 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.0) thunderbird-68.4.1-2.el8_0
  • RHSA-2020:0127 Released 2020-01-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-68.4.1-2.el8_1
Show 5 more Red Hat advisories
  • RHSA-2020:0120 Released 2020-01-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-68.4.1-2.el7_7
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-68.4.1-2.el7_7
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-68.4.1-2.el7_7
  • RHSA-2020:0123 Released 2020-01-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-68.4.1-2.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-68.4.1-2.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-68.4.1-2.el6_10
  • RHSA-2020:0111 Released 2020-01-14 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-68.4.1-1.el8_1
  • RHSA-2020:0085 Released 2020-01-13 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-68.4.1-1.el7_7
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-68.4.1-1.el7_7
    • Red Hat Enterprise Linux Server (v. 7) firefox-68.4.1-1.el7_7
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-68.4.1-1.el7_7
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-68.4.1-1.el7_7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-68.4.1-1.el7_7
  • RHSA-2020:0086 Released 2020-01-13 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-68.4.1-1.el6_10
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-68.4.1-1.el6_10
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-68.4.1-1.el6_10
    • Red Hat Enterprise Linux Server (v. 6) firefox-68.4.1-1.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-68.4.1-1.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-68.4.1-1.el6_10
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-68.4.1-1.el6_10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Mozilla Firefox, Firefox ESR — USN-4241-1

    10 records Highest priority Priority MEDIUM 6 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2019-08802 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 44
    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 42
    Show all 10 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0292

    9 records Highest priority Priority MEDIUM 5 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 42
    • TI-2019-12691 Use after free in Mozilla ThunderbirdPriority MEDIUM 42
    Show all 9 records → Advisory →
Show 12 more groups
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0295

    9 records Highest priority Priority MEDIUM 5 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 42
    • TI-2019-12691 Use after free in Mozilla ThunderbirdPriority MEDIUM 42
    Show all 9 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — USN-4234-1

    7 records Highest priority Priority MEDIUM 3 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12708 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 41
    • TI-2019-12706 Improper authentication in Mozilla FirefoxPriority LOW 32
    Show all 7 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — openSUSE-SU-2020:0060

    6 records Highest priority Priority MEDIUM 3 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12698 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 42
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 6 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — openSUSE-SU-2020:0094

    6 records Highest priority Priority MEDIUM 3 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12698 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 42
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 6 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0085

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0086

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0111

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0120

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0123

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — RHSA-2020:0127

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — DSA-4600

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR — DSA-4603

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2019-12707 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12705 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    • TI-2019-12699 Cross-site scripting in Mozilla Firefox ESRPriority LOW 31
    Show all 4 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2020:0111, RHSA-2020:0127
Red Hat Enterprise Linux AppStream E4S (v. 8.0)Fixed RHSA-2020:0292, RHSA-2020:0295
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:0085, RHSA-2020:0120
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:0085
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2020:0086, RHSA-2020:0123
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2020:0086
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2020:0086
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2020:0086
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:0085
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2020:0086, RHSA-2020:0123
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:0085, RHSA-2020:0120
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2020:0086, RHSA-2020:0123
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:0085, RHSA-2020:0120
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2020:0086
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:0085

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-17017
  2. 2026-10-03 Alias added: GHSA-6m7f-wqg6-qgm2

References

Advisory 21

Other 4

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences