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TI-2023-06272 Aliases CVE-2023-6867GHSA-2mpv-2j92-5mm4

Clickjacking in Mozilla Firefox ESR

Priority LOW 28CWE-1021Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 18 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-1021.

Summary

The timing of a button click causing a popup to disappear was approximately the same length as the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00683 52nd percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 115.6Firefox (Mozilla): 121Red Hat: 9 advisoriesRed Hat: 18 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 115.6115.6Patch availableCNA
MozillaFirefoxbefore 121121Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 115.6 Fixed in 115.6 Patch available CNA
  • Firefox VendorMozilla Affected before 121 Fixed in 121 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 121.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 115.6VulnerableMozilla
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*12.0VulnerableDebian
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 121.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 115.6 Vulnerable ·Mozilla
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 115.6
  • Fix · CNA Firefox (Mozilla) Fixed in 121

Red Hat 9 advisories

  • RHSA-2024:0023 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-115.6.0-1.el8_2
    • Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-115.6.0-1.el8_2
    • Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-115.6.0-1.el8_2
  • RHSA-2024:0026 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-115.6.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-115.6.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-115.6.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-115.6.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-115.6.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-115.6.0-1.el7_9
  • RHSA-2024:0024 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-115.6.0-1.el8_6
Show 6 more Red Hat advisories
  • RHSA-2024:0022 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-115.6.0-1.el9_0
  • RHSA-2024:0021 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-115.6.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-115.6.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-115.6.0-1.el8_4
  • RHSA-2024:0025 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-115.6.0-1.el9_3, firefox-x11-115.6.0-1.el9_3
  • RHSA-2024:0019 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-115.6.0-1.el9_2, firefox-x11-115.6.0-1.el9_2
  • RHSA-2024:0011 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-115.6.0-1.el8_8
  • RHSA-2024:0012 Released 2024-01-02 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-115.6.0-1.el8_9

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 121

    18 records Highest priority Priority MEDIUM 8 MEDIUM, 10 LOW

    Other records, highest priority first

    • TI-2023-06261 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 57
    • TI-2023-06263 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2023-06271 Improper handling of exceptional conditions in Mozilla FirefoxPriority MEDIUM 41
    Show all 18 records →
  • Release ·

    Mozilla Firefox ESR 115.6

    11 records Highest priority Priority MEDIUM 7 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2023-06261 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 57
    • TI-2023-06263 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 43
    • TI-2023-06267 Use after free in Mozilla Firefox ESRPriority MEDIUM 42
    Show all 11 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:0012
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:0025
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2024:0023
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2024:0021
Red Hat Enterprise Linux AppStream E4S (v. 8.2)Fixed RHSA-2024:0023
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2024:0021
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2024:0024
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2024:0011
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2024:0022
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:0019
Red Hat Enterprise Linux AppStream TUS (v. 8.2)Fixed RHSA-2024:0023
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2024:0021
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2024:0026
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2024:0026
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2024:0026
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2024:0026
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2024:0026
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2024:0026
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6867
  2. 2026-10-03 Alias added: GHSA-2mpv-2j92-5mm4

References

Advisory 5

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