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TI-2018-08875 Aliases CVE-2018-12374GHSA-x5qf-xh29-8vm2

Information disclosure in Mozilla Thunderbird

Priority LOW 24CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.

Summary

Plaintext of decrypted emails can leak through by user submitting an embedded form by pressing enter key within a text input field. This vulnerability affects Thunderbird < 52.9.

Why it matters now

EPSS 0.02042 81st percentileScored 2026-11-07
Fix Fixed Thunderbird (Mozilla): 52.9Red Hat: 2 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaThunderbirdbefore 52.952.9Patch availableCNA
  • Thunderbird VendorMozilla Affected before 52.9 Fixed in 52.9 Patch available CNA

CPE configurations NVD · 17

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 52.9.0VulnerableMozilla
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
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_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.9.0 Vulnerable ·Mozilla
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red 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_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
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:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • 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:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 52.9

Red Hat 2 advisories

  • RHSA-2018:2251 Released 2018-07-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.9.1-1.el6
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.9.1-1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.9.1-1.el6
  • RHSA-2018:2252 Released 2018-07-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-52.9.1-1.el7_5
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.9.1-1.el7_5
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.9.1-1.el7_5
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-52.9.1-1.el7_5

Fixed in the same release

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

  • Advisory ·

    Mozilla Thunderbird — RHSA-2018:2251

    11 records Highest priority Priority MEDIUM 6 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2018-03751 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2018-08860 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 46
    • TI-2018-08863 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 45
    Show all 11 records → Advisory →
  • Advisory ·

    Mozilla Thunderbird — RHSA-2018:2252

    11 records Highest priority Priority MEDIUM 6 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2018-03751 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2018-08860 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 46
    • TI-2018-08863 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 45
    Show all 11 records → Advisory →
Show 2 more groups
  • Advisory ·

    Mozilla Thunderbird — USN-3714-1

    11 records Highest priority Priority MEDIUM 6 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2018-03751 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2018-08860 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 46
    • TI-2018-08863 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 45
    Show all 11 records → Advisory →
  • Advisory ·

    Mozilla Thunderbird — DSA-4244

    11 records Highest priority Priority MEDIUM 6 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2018-03751 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2018-08860 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 46
    • TI-2018-08863 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 45
    Show all 11 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:2252
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2018:2251
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2018:2251
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:2252
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:2251
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:2252
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:2252
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-12374
  2. 2026-10-03 Alias added: GHSA-x5qf-xh29-8vm2

References

Patch 1

Advisory 7

  • 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 2067 →

Sources

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