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TI-2019-12688 Aliases CVE-2019-17005GHSA-p5rh-pvj2-8vfv

Out-of-bounds write in Mozilla Thunderbird

Priority MEDIUM 42CWE-787Published · 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-787 and the CVSS impact.

Summary

The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

Why it matters now

EPSS 0.01907 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Thunderbird (Mozilla): 68.3Firefox ESR (Mozilla): 68.3+1 more productRed 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
MozillaThunderbirdbefore 68.368.3Patch availableCNA
MozillaFirefox ESRbefore 68.368.3Patch availableCNA
MozillaFirefoxbefore 7171Patch availableCNA
  • Thunderbird VendorMozilla Affected before 68.3 Fixed in 68.3 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 68.3 Fixed in 68.3 Patch available CNA
  • Firefox VendorMozilla Affected before 71 Fixed in 71 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 71.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 68.3VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 68.3VulnerableMozilla
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*19.10VulnerableCanonical
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 71.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 68.3 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 68.3 Vulnerable ·Mozilla
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 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:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 68.3
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 68.3
  • Fix · CNA Firefox (Mozilla) Fixed in 71

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-2019:4205 Released 2019-12-11 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-68.3.0-3.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-68.3.0-3.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-68.3.0-3.el6_10
Show 5 more Red Hat advisories
  • RHSA-2019:4195 Released 2019-12-10 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-68.3.0-2.el8_1
  • RHSA-2019:4148 Released 2019-12-10 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-68.3.0-1.el7_7
  • RHSA-2019:4111 Released 2019-12-05 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-68.3.0-1.el8_1
  • RHSA-2019:4107 Released 2019-12-05 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Server (v. 7) firefox-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-68.3.0-1.el7_7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-68.3.0-1.el7_7
  • RHSA-2019:4108 Released 2019-12-05 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-68.3.0-1.el6_10
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-68.3.0-1.el6_10
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-68.3.0-1.el6_10
    • Red Hat Enterprise Linux Server (v. 6) firefox-68.3.0-1.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-68.3.0-1.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-68.3.0-1.el6_10
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-68.3.0-1.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 — 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-2019-12700 Type confusion in Mozilla Firefox ESRPriority MEDIUM 43
    Show all 10 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — 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-2019-12700 Type confusion in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 42
    Show all 9 records → Advisory →
Show 3 more groups
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — 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-2019-12700 Type confusion in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2019-12695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 42
    Show all 9 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — openSUSE-SU-2020:0003

    7 records Highest priority Priority MEDIUM 4 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2019-08802 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 44
    • 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 7 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — openSUSE-SU-2020:0002

    7 records Highest priority Priority MEDIUM 4 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2019-08802 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 44
    • 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 7 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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-2019:4111, RHSA-2019:4195
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-2019:4107, RHSA-2019:4148
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:4107
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2019:4108, RHSA-2019:4205
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2019:4108
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2019:4108
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:4108
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:4107
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2019:4108, RHSA-2019:4205
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:4107, RHSA-2019:4148
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:4108, RHSA-2019:4205
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:4107, RHSA-2019:4148
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2019:4108
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:4107

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-17005
  2. 2026-10-03 Alias added: GHSA-p5rh-pvj2-8vfv

References

Exploit 1

Advisory 11

  • 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