Information disclosure in Mozilla Firefox ESR
Priority LOW 31CWE-200Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.
Summary
A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.
Why it matters now
EPSS 0.00371 31st percentileScored 2026-11-07
Fix Fixed Firefox ESR (Mozilla): 60.3Firefox (Mozilla): 63Red Hat: 2 advisories
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 ESR | before 60.3 | 60.3 | Patch available | CNA |
| Mozilla | Firefox | before 63 | 63 | Patch available | CNA |
- Firefox ESR VendorMozilla Affected before 60.3 Fixed in 60.3 Patch available CNA
- Firefox VendorMozilla Affected before 63 Fixed in 63 Patch available CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 60.3.0; before 63.0 | Vulnerable | Mozilla |
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 60.3.0; before 63.0 Vulnerable ·Mozilla
- 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_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: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
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
- 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:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
Remediation
- Fix · CNA Firefox ESR (Mozilla) Fixed in 60.3
- Fix · CNA Firefox (Mozilla) Fixed in 63
Red Hat 2 advisories
- RHSA-2018:3006 Released 2018-10-24 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-60.3.0-1.el6
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-60.3.0-1.el6
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-60.3.0-1.el6
- Red Hat Enterprise Linux Server (v. 6) firefox-60.3.0-1.el6
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-60.3.0-1.el6
- Red Hat Enterprise Linux Workstation (v. 6) firefox-60.3.0-1.el6
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-60.3.0-1.el6
- RHSA-2018:3005 Released 2018-10-24 · Red Hat rating Criticalfirefox security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) firefox-60.3.0-1.el7_5
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-60.3.0-1.el7_5
- Red Hat Enterprise Linux Server (v. 7) firefox-60.3.0-1.el7_5
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-60.3.0-1.el7_5
- Red Hat Enterprise Linux Workstation (v. 7) firefox-60.3.0-1.el7_5
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-60.3.0-1.el7_5
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-60.3.0-1.el7_5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Mozilla Firefox, Firefox ESR — USN-3801-1
12 records Highest priority Priority MEDIUM 4 MEDIUM, 8 LOW
Other records, highest priority first
- TI-2018-08892 When manipulating user events in nested loops while opening a document through script, it…Priority MEDIUM 48
- TI-2018-08890 Memory corruption in Mozilla FirefoxPriority MEDIUM 48
- TI-2018-08888 Memory corruption in Mozilla FirefoxPriority MEDIUM 41
- Advisory ·
Mozilla Firefox, Firefox ESR — RHSA-2018:3005
7 records Highest priority Priority MEDIUM 4 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2018-08892 When manipulating user events in nested loops while opening a document through script, it…Priority MEDIUM 48
- TI-2018-08890 Memory corruption in Mozilla FirefoxPriority MEDIUM 48
- TI-2018-08889 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 43
Show 3 more groups
- Advisory ·
Mozilla Firefox, Firefox ESR — RHSA-2018:3006
7 records Highest priority Priority MEDIUM 4 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2018-08892 When manipulating user events in nested loops while opening a document through script, it…Priority MEDIUM 48
- TI-2018-08890 Memory corruption in Mozilla FirefoxPriority MEDIUM 48
- TI-2018-08889 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR — GLSA-201811-04
7 records Highest priority Priority MEDIUM 4 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2018-08892 When manipulating user events in nested loops while opening a document through script, it…Priority MEDIUM 48
- TI-2018-08890 Memory corruption in Mozilla FirefoxPriority MEDIUM 48
- TI-2018-08889 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR — DSA-4324
7 records Highest priority Priority MEDIUM 4 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2018-08892 When manipulating user events in nested loops while opening a document through script, it…Priority MEDIUM 48
- TI-2018-08890 Memory corruption in Mozilla FirefoxPriority MEDIUM 48
- TI-2018-08889 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 43
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:3005 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:3005 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:3005 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:3005 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:3005 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:3006 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:3005 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:3005 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12397
- 2026-10-03 Alias added: GHSA-xxh5-92qj-c4gh
References
Advisory 9
- https://bugzilla.mozilla.org/show_bug.cgi?id=1487478
- DSA-4324
- https://www.mozilla.org/security/advisories/mfsa2018-26/
- GLSA-201811-04
- https://www.mozilla.org/security/advisories/mfsa2018-27/
- RHSA-2018:3005
- RHSA-2018:3006
- USN-3801-1
- [debian-lts-announce] 20181107 [SECURITY] [DLA 1571-1] firefox-esr security update
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-2018-12397 · CVE Program
- CVE-2018-12397 · NVD
- FIRST EPSS
- GHSA-xxh5-92qj-c4gh · GitHub Advisory Database · CC BY 4.0
- CVE-2018-12397 · 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