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TI-2019-08768 Aliases CVE-2019-11707GHSA-8ffr-q7j8-h445

Type confusion in Mozilla Firefox ESR

Priority CRITICAL 97Exploited in the wildCWE-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
Fixed

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

Summary

A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.

Why it matters now

Exploitation Active In CISA KEV since 2022-05-23CISA due date 2022-06-13
EPSS 0.37951 98th percentileScored 2026-11-07
Fix Fixed Firefox ESR (Mozilla): 60.7.1Firefox (Mozilla): 67.0.3+1 more productRed Hat: 6 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 60.7.160.7.1Patch availableCNA
MozillaFirefoxbefore 67.0.367.0.3Patch availableCNA
MozillaThunderbirdbefore 60.7.260.7.2Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 60.7.1 Fixed in 60.7.1 Patch available CNA
  • Firefox VendorMozilla Affected before 67.0.3 Fixed in 67.0.3 Patch available CNA
  • Thunderbird VendorMozilla Affected before 60.7.2 Fixed in 60.7.2 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*before 60.7.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*before 67.0.3VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 60.7.2VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* Versions before 60.7.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* Versions before 67.0.3 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 60.7.2 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 60.7.1
  • Fix · CNA Firefox (Mozilla) Fixed in 67.0.3
  • Fix · CNA Thunderbird (Mozilla) Fixed in 60.7.2

Red Hat 6 advisories

  • RHSA-2019:1696 Released 2019-07-08 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-60.7.2-3.el8_0
  • RHSA-2019:1626 Released 2019-06-27 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-60.7.2-2.el7_6
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-60.7.2-2.el7_6
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-60.7.2-2.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-60.7.2-2.el7_6
  • RHSA-2019:1624 Released 2019-06-27 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-60.7.2-2.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-60.7.2-2.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-60.7.2-2.el6_10
Show 3 more Red Hat advisories
  • RHSA-2019:1623 Released 2019-06-27 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-60.7.2-2.el8_0
  • RHSA-2019:1603 Released 2019-06-25 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-60.7.2-1.el7_6
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-60.7.2-1.el7_6
    • Red Hat Enterprise Linux Server (v. 7) firefox-60.7.2-1.el7_6
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-60.7.2-1.el7_6
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-60.7.2-1.el7_6
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-60.7.2-1.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-60.7.2-1.el7_6
  • RHSA-2019:1604 Released 2019-06-25 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-60.7.2-1.el6_10
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-60.7.2-1.el6_10
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-60.7.2-1.el6_10
    • Red Hat Enterprise Linux Server (v. 6) firefox-60.7.2-1.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-60.7.2-1.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-60.7.2-1.el6_10
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-60.7.2-1.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, Thunderbird — GLSA-201908-12

    23 records Highest priority Priority CRITICAL 2 CRITICAL, 8 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2019-08769 Improper input validation in Mozilla Firefox ESRPriority CRITICAL 100
    • TI-2019-08789 A vulnerability exists where if a user opens a locally saved HTML file, this file can use…Priority MEDIUM 48
    • TI-2019-08770 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 47
    Show all 23 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2019:1623, RHSA-2019:1696
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:1603, RHSA-2019:1626
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:1603
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2019:1604, RHSA-2019:1624
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2019:1604
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2019:1604
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:1604
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1603
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2019:1604, RHSA-2019:1624
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:1603, RHSA-2019:1626
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:1604, RHSA-2019:1624
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1603, RHSA-2019:1626
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2019:1604
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:1603
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:1603
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:1626

Timeline

  1. 2022-05-23 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2019-11707
  3. 2026-10-03 Alias added: GHSA-8ffr-q7j8-h445

References

Advisory 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