Clickjacking in Mozilla Firefox
Priority LOW 25CWE-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: 19 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 black fade animation when exiting fullscreen is roughly the length of 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 < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
Why it matters now
EPSS 0.00642 51st percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 120Firefox ESR (Mozilla): 115.5.0+1 more productRed Hat: 20 advisoriesRed Hat: 19 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Firefox | before 120 | 120 | Patch available | CNA |
| Mozilla | Firefox ESR | before 115.5.0 | 115.5.0 | Patch available | CNA |
| Mozilla | Thunderbird | before 115.5 | 115.5 | Patch available | CNA |
- Firefox VendorMozilla Affected before 120 Fixed in 120 Patch available CNA
- Firefox ESR VendorMozilla Affected before 115.5.0 Fixed in 115.5.0 Patch available CNA
- Thunderbird VendorMozilla Affected before 115.5 Fixed in 115.5 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 120.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | before 115.5.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 115.5 | Vulnerable | Mozilla |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Debian |
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 120.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 115.5.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 115.5 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 (Mozilla) Fixed in 120
- Fix · CNA Firefox ESR (Mozilla) Fixed in 115.5.0
- Fix · CNA Thunderbird (Mozilla) Fixed in 115.5
Red Hat 20 advisories
- RHSA-2023:7577 Released 2023-11-29 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-115.5.0-1.el9_2, firefox-x11-115.5.0-1.el9_2
- RHSA-2023:7574 Released 2023-11-29 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-115.5.0-1.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-115.5.0-1.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-115.5.0-1.el8_2
- RHSA-2023:7573 Released 2023-11-29 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-115.5.0-1.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-115.5.0-1.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-115.5.0-1.el8_2
Show 17 more Red Hat advisories
- RHSA-2023:7569 Released 2023-11-29 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-115.5.0-1.el8_4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-115.5.0-1.el8_4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-115.5.0-1.el8_4
- RHSA-2023:7570 Released 2023-11-29 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-115.5.0-1.el8_4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-115.5.0-1.el8_4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-115.5.0-1.el8_4
- RHSA-2023:7547 Released 2023-11-28 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-115.5.0-1.el8_1
- RHSA-2023:7512 Released 2023-11-27 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-115.5.0-1.el8_6
- RHSA-2023:7509 Released 2023-11-27 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-115.5.0-1.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-115.5.0-1.el7_9
- Red Hat Enterprise Linux Server (v. 7) firefox-115.5.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-115.5.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-115.5.0-1.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-115.5.0-1.el7_9
- RHSA-2023:7505 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-115.5.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-115.5.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-115.5.0-1.el7_9
- RHSA-2023:7508 Released 2023-11-27 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-115.5.0-1.el8_9
- RHSA-2023:7507 Released 2023-11-27 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 9) firefox-115.5.0-1.el9_3, firefox-x11-115.5.0-1.el9_3
- RHSA-2023:7511 Released 2023-11-27 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-115.5.0-1.el8_8
- RHSA-2023:7506 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-115.5.0-1.el9_0
- RHSA-2023:7510 Released 2023-11-27 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-115.5.0-1.el9_0
- RHSA-2023:7503 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-115.5.0-1.el8_6
- RHSA-2023:7504 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird-115.5.0-1.el8_8
- RHSA-2023:7500 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-115.5.0-1.el8_9
- RHSA-2023:7501 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 9) thunderbird-115.5.0-1.el9_3
- RHSA-2023:7499 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird-115.5.0-1.el9_2
- RHSA-2023:7502 Released 2023-11-27 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-115.5.0-1.el8_1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 120
10 records Highest priority Priority MEDIUM 3 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2023-05706 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 42
- TI-2023-05702 When using X11, text selected by the page using the Selection API was erroneously copied…Priority MEDIUM 40
- TI-2023-05701 Use after free in Mozilla FirefoxPriority MEDIUM 40
- Release ·
Mozilla Firefox ESR, Thunderbird 115.5, 115.5.0
7 records Highest priority Priority MEDIUM 3 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2023-05706 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 42
- TI-2023-05702 When using X11, text selected by the page using the Selection API was erroneously copied…Priority MEDIUM 40
- TI-2023-05701 Use after free in Mozilla FirefoxPriority MEDIUM 40
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2023:7500, RHSA-2023:7508 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:7501, RHSA-2023:7507 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2023:7573, RHSA-2023:7574 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2023:7569, RHSA-2023:7570 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.1) | Fixed | RHSA-2023:7502, RHSA-2023:7547 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.2) | Fixed | RHSA-2023:7573, RHSA-2023:7574 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2023:7569, RHSA-2023:7570 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2023:7503, RHSA-2023:7512 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2023:7504, RHSA-2023:7511 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2023:7506, RHSA-2023:7510 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2023:7499, RHSA-2023:7577 |
| Red Hat Enterprise Linux AppStream TUS (v. 8.2) | Fixed | RHSA-2023:7573, RHSA-2023:7574 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2023:7569, RHSA-2023:7570 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2023:7505, RHSA-2023:7509 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2023:7509 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2023:7509 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2023:7505, RHSA-2023:7509 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2023:7505, RHSA-2023:7509 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2023:7509 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-6206
- 2026-10-03 Alias added: GHSA-68m9-mw54-x3jx
- 2026-10-21 EPSS moved to the 50th–90th percentile
References
Advisory 4
More Mozilla Firefox vulnerabilities
- 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
Sources
- CVE-2023-6206 · CVE Program
- CVE-2023-6206 · NVD
- FIRST EPSS
- GHSA-68m9-mw54-x3jx · GitHub Advisory Database · CC BY 4.0
- CVE-2023-6206 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences