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TI-2019-08774 Aliases CVE-2019-11713GHSA-h68r-8w79-hfx9

Use after free in Mozilla Firefox ESR

Priority MEDIUM 46CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 16 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

A use-after-free vulnerability can occur in HTTP/2 when a cached HTTP/2 stream is closed while still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Why it matters now

EPSS 0.02149 82nd percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 60.8Firefox (Mozilla): 68+1 more productRed Hat: 6 advisoriesRed Hat: 16 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 60.860.8Patch availableCNA
MozillaFirefoxbefore 6868Patch availableCNA
MozillaThunderbirdbefore 60.860.8Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 60.8 Fixed in 60.8 Patch available CNA
  • Firefox VendorMozilla Affected before 68 Fixed in 68 Patch available CNA
  • Thunderbird VendorMozilla Affected before 60.8 Fixed in 60.8 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 60.8.0; before 68.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 60.8.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 60.8.0; before 68.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 60.8.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 60.8
  • Fix · CNA Firefox (Mozilla) Fixed in 68
  • Fix · CNA Thunderbird (Mozilla) Fixed in 60.8

Red Hat 6 advisories

  • RHSA-2019:1799 Released 2019-07-16 · Red Hat rating Important
    thunderbird security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-60.8.0-1.el8_0
  • RHSA-2019:1777 Released 2019-07-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-60.8.0-1.el6_10
  • RHSA-2019:1775 Released 2019-07-15 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-60.8.0-1.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-60.8.0-1.el7_6
Show 3 more Red Hat advisories
  • RHSA-2019:1763 Released 2019-07-11 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Server (v. 7) firefox-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-60.8.0-1.el7_6
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-60.8.0-1.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-60.8.0-1.el7_6
  • RHSA-2019:1765 Released 2019-07-11 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-60.8.0-1.el6_10
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Server (v. 6) firefox-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-60.8.0-1.el6_10
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-60.8.0-1.el6_10
  • RHSA-2019:1764 Released 2019-07-11 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-60.8.0-1.el8_0

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-2019-08768 Type confusion in Mozilla Firefox ESRPriority CRITICAL 97
    • TI-2019-08789 A vulnerability exists where if a user opens a locally saved HTML file, this file can use…Priority MEDIUM 48
    Show all 23 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — GLSA-201908-20

    14 records Highest priority Priority MEDIUM 10 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2019-08765 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 55
    • TI-2019-08764 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 55
    • TI-2019-08766 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 54
    Show all 14 records → Advisory →
Show 3 more groups
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — openSUSE-SU-2019:1811

    10 records Highest priority Priority MEDIUM 6 MEDIUM, 4 LOW

    Other records, highest priority first

    • 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
    • TI-2019-08772 When an inner window is reused, it does not consider the use of document.domain for…Priority MEDIUM 41
    Show all 10 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — openSUSE-SU-2019:1813

    10 records Highest priority Priority MEDIUM 6 MEDIUM, 4 LOW

    Other records, highest priority first

    • 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
    • TI-2019-08772 When an inner window is reused, it does not consider the use of document.domain for…Priority MEDIUM 41
    Show all 10 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — openSUSE-SU-2019:1990

    10 records Highest priority Priority MEDIUM 6 MEDIUM, 4 LOW

    Other records, highest priority first

    • 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
    • TI-2019-08772 When an inner window is reused, it does not consider the use of document.domain for…Priority MEDIUM 41
    Show all 10 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-2019:1764, RHSA-2019:1799
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:1763, RHSA-2019:1775
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:1763
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2019:1765, RHSA-2019:1777
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2019:1765
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2019:1765
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:1765
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1763
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2019:1765, RHSA-2019:1777
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:1763, RHSA-2019:1775
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:1765, RHSA-2019:1777
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1763, RHSA-2019:1775
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2019:1765
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:1763
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:1763
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:1775

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-11713
  2. 2026-10-03 Alias added: GHSA-h68r-8w79-hfx9

References

Advisory 11

Other 2

  • 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