TI-2018-13079 Aliases CVE-2018-18495 GHSA-c244-84j9-388q

Incorrect permission assignment in Mozilla Firefox

LOW 33CWE-732Published 2019-02-28 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · None · None
Fix status: Partial Red Hat: 3 without a fix

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

Summary

WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions. This vulnerability affects Firefox < 64.

Why it matters now

EPSS 0.01931 80th percentileScored 2026-11-07

Fix Partial Firefox (Mozilla): 64Red Hat: 3 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 64	64	Patch available	CNA

Firefox VendorMozilla Affected before 64 Fixed in 64 Patch available CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:firefox::::::::	before 64.0	Vulnerable	Mozilla
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:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 64.0 Vulnerable ·Mozilla
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 (Mozilla) Fixed in 64

Fixed in the same release

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

Release · 2019-02-28
Mozilla Firefox 64
10 records Highest priority Priority MEDIUM 7 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2018-13076 Use after free in Mozilla ThunderbirdPriority MEDIUM 54
- TI-2018-13077 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 50
- TI-2018-13082 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 49
Show all 10 records →

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Will not fix
Red Hat Enterprise Linux 7	Affected	No fix planned: Will not fix
Red Hat Enterprise Linux 8	Affected	No fix planned: Will not fix

Timeline

2026-10-02 Threatist record created from CVE-2018-18495
2026-10-03 Alias added: GHSA-c244-84j9-388q

References

Advisory 3

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