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TI-2017-03401 Aliases CVE-2017-5373GHSA-q95x-v9cp-2p83

Memory corruption in Mozilla Thunderbird

Priority MEDIUM 48CWE-119Published · 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
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

Memory safety bugs were reported in Firefox 50.1 and Firefox ESR 45.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Why it matters now

EPSS 0.03287 88th percentileScored 2026-11-07
Fix Fixed Thunderbird (Mozilla): 45.7Firefox ESR (Mozilla): 45.7+1 more productRed Hat: 2 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaThunderbirdbefore 45.745.7Patch availableCNA
MozillaFirefox ESRbefore 45.745.7Patch availableCNA
MozillaFirefoxbefore 5151Patch availableCNA
  • Thunderbird VendorMozilla Affected before 45.7 Fixed in 45.7 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 45.7 Fixed in 45.7 Patch available CNA
  • Firefox VendorMozilla Affected before 51 Fixed in 51 Patch available CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 45.7.0; before 51.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 45.7.0VulnerableMozilla
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*5.0VulnerableRed 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:5.0:*:*:*:*:*:*:*5.0VulnerableRed 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:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 45.7.0; before 51.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 45.7.0 Vulnerable ·Mozilla
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* Versions 5.0 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:5.0:*:*:*:*:*:*:* Versions 5.0 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:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
Show 2 more CPE
CPEVersionsRoleVendor
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_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 Thunderbird (Mozilla) Fixed in 45.7
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 45.7
  • Fix · CNA Firefox (Mozilla) Fixed in 51

Red Hat 2 advisories

  • RHSA-2017:0238 Released 2017-02-02 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-45.7.0-1.el7_3
    • Red Hat Enterprise Linux Desktop (v. 5 client) thunderbird-45.7.0-1.el5_11, thunderbird-45.7.0-1.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-45.7.0-1.el6_8
    • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird-45.7.0-1.el5_11, thunderbird-45.7.0-1.el5_11.i386
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-45.7.0-1.el6_8
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-45.7.0-1.el7_3
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-45.7.0-1.el6_8
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-45.7.0-1.el7_3
  • RHSA-2017:0190 Released 2017-01-25 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux (v. 5 server) firefox-45.7.0-2.el5_11, firefox-45.7.0-2.el5_11.i386
    • Red Hat Enterprise Linux Client (v. 7) firefox-45.7.0-2.el7_3
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-45.7.0-2.el7_3
    • Red Hat Enterprise Linux Desktop (v. 5 client) firefox-45.7.0-2.el5_11, firefox-45.7.0-2.el5_11.i386
    • Red Hat Enterprise Linux Desktop (v. 6) firefox-45.7.0-2.el6_8
    • Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-45.7.0-2.el6_8
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-45.7.0-2.el6_8
    • Red Hat Enterprise Linux Server (v. 6) firefox-45.7.0-2.el6_8
    • Red Hat Enterprise Linux Server (v. 7) firefox-45.7.0-2.el7_3
    • Red Hat Enterprise Linux Server Optional (v. 6) firefox-45.7.0-2.el6_8, firefox-45.7.0-2.el6_8.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-45.7.0-2.el7_3, firefox-45.7.0-2.el7_3.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) firefox-45.7.0-2.el6_8
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-45.7.0-2.el7_3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-45.7.0-2.el6_8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-45.7.0-2.el7_3

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 — DSA-3832

    17 records Highest priority Priority HIGH 1 HIGH, 11 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2017-03403 Memory corruption in Mozilla ThunderbirdPriority HIGH 67
    • TI-2017-03432 Use after free in Mozilla FirefoxPriority MEDIUM 59
    • TI-2017-03424 Use after free in Mozilla ThunderbirdPriority MEDIUM 49
    Show all 17 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2017:0190

    9 records Highest priority Priority HIGH 1 HIGH, 5 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2017-03403 Memory corruption in Mozilla ThunderbirdPriority HIGH 67
    • TI-2017-03424 Use after free in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2017-03418 The JSON viewer in the Developer Tools uses insecure methods to create a communication…Priority MEDIUM 49
    Show all 9 records → Advisory →
Show 4 more groups
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — GLSA-201702-22

    9 records Highest priority Priority HIGH 1 HIGH, 5 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2017-03403 Memory corruption in Mozilla ThunderbirdPriority HIGH 67
    • TI-2017-03424 Use after free in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2017-03418 The JSON viewer in the Developer Tools uses insecure methods to create a communication…Priority MEDIUM 49
    Show all 9 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — DSA-3771

    9 records Highest priority Priority HIGH 1 HIGH, 5 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2017-03403 Memory corruption in Mozilla ThunderbirdPriority HIGH 67
    • TI-2017-03424 Use after free in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2017-03418 The JSON viewer in the Developer Tools uses insecure methods to create a communication…Priority MEDIUM 49
    Show all 9 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2017:0238

    8 records Highest priority Priority HIGH 1 HIGH, 5 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2017-03403 Memory corruption in Mozilla ThunderbirdPriority HIGH 67
    • TI-2017-03424 Use after free in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2017-03418 The JSON viewer in the Developer Tools uses insecure methods to create a communication…Priority MEDIUM 49
    Show all 8 records → Advisory →
  • Advisory ·

    Mozilla Firefox, Firefox ESR, Thunderbird — GLSA-201702-13

    8 records Highest priority Priority HIGH 1 HIGH, 5 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2017-03403 Memory corruption in Mozilla ThunderbirdPriority HIGH 67
    • TI-2017-03424 Use after free in Mozilla ThunderbirdPriority MEDIUM 49
    • TI-2017-03418 The JSON viewer in the Developer Tools uses insecure methods to create a communication…Priority MEDIUM 49
    Show all 8 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2017:0190
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:0190
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2017:0190
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2017:0190
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server)Fixed RHSA-2017:0238
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:0190
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:0190
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:0190, RHSA-2017:0238
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2017:0190
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:0190

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-5373
  2. 2026-10-03 Alias added: GHSA-q95x-v9cp-2p83

References

Advisory 9

Other 1

  • 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