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TI-2017-03475 Aliases CVE-2017-5451GHSA-vvjr-2r7m-cm7q

Improper input validation in Mozilla Thunderbird

Priority LOW 23CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Partial Red Hat: 9 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

A mechanism to spoof the addressbar through the user interaction on the addressbar and the "onblur" event. The event could be used by script to affect text display to make the loaded site appear to be different from the one actually loaded within the addressbar. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Why it matters now

EPSS 0.01481 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Thunderbird (Mozilla): 52.1Firefox ESR (Mozilla): 52.1+1 more productRed Hat: 2 advisoriesRed Hat: 9 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 52.152.1Patch availableCNA
MozillaFirefox ESRbefore 52.152.1Patch availableCNA
MozillaFirefoxbefore 5353Patch availableCNA
  • Thunderbird VendorMozilla Affected before 52.1 Fixed in 52.1 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 52.1 Fixed in 52.1 Patch available CNA
  • Firefox VendorMozilla Affected before 53 Fixed in 53 Patch available CNA

CPE configurations NVD · 15

CPEVersionsRoleVendor
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_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_server_aus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
  • 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_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_server_aus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
Show 5 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
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:a:mozilla:firefox:*:*:*:*:*:*:*:*before 53.0; before 52.1.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 52.1.0VulnerableMozilla
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red 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
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 53.0; before 52.1.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.1.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 52.1
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 52.1
  • Fix · CNA Firefox (Mozilla) Fixed in 53

Red Hat 2 advisories

  • RHSA-2017:1201 Released 2017-05-08 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-52.1.0-1.el7_3
    • Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.1.0-1.el6_9
    • Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.1.0-1.el6_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.1.0-1.el7_3
    • Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.1.0-1.el6_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.1.0-1.el7_3
  • RHSA-2017:1106 Released 2017-04-21 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-52.1.0-2.el7_3
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.1.0-2.el7_3
    • Red Hat Enterprise Linux Server (v. 7) firefox-52.1.0-2.el7_3
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.1.0-2.el7_3, firefox-52.1.0-2.el7_3.ppc
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-52.1.0-2.el7_3
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-52.1.0-2.el7_3

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 53

    14 records Highest priority Priority MEDIUM 3 MEDIUM, 11 LOW

    Other records, highest priority first

    • TI-2017-03456 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 48
    • TI-2017-03480 Incorrect permission assignment in Mozilla Firefox ESRPriority MEDIUM 47
    • TI-2017-03491 An issue with incorrect ownership model of "privateBrowsing" information exposed through…Priority MEDIUM 44
    Show all 14 records →
  • Release ·

    Mozilla Firefox ESR 52.1

    8 records Highest priority Priority MEDIUM 2 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2017-03456 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 48
    • TI-2017-03480 Incorrect permission assignment in Mozilla Firefox ESRPriority MEDIUM 47
    • TI-2017-03479 The internal feed reader APIs that crossed the sandbox barrier allowed for a sandbox…Priority LOW 39
    Show all 8 records →
Show 1 more group
  • Release ·

    Mozilla Thunderbird 52.1

    6 records Highest priority Priority MEDIUM 1 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2017-03456 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 48
    • TI-2017-03473 Improper input validation in Mozilla ThunderbirdPriority LOW 38
    • TI-2017-03490 Memory corruption in Mozilla ThunderbirdPriority LOW 37
    Show all 6 records →

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: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:1106, RHSA-2017:1201
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:1106
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:1201
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:1106
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2017:1201
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:1106, RHSA-2017:1201
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:1201
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:1106, RHSA-2017:1201
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:1106
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-5451
  2. 2026-10-03 Alias added: GHSA-vvjr-2r7m-cm7q

References

Exploit 1

Advisory 5

  • 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