PT-2018-2998 · Mozilla+3 · Firefox+3

Francois Lajeunesse Robert · Published 2018-05-09 · Updated 2024-12-12 · CVE-2018-5166

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions Firefox ESR versions prior to 60 Firefox versions prior to 60

Description The issue is related to errors in privilege assignment in the WebExtensions system for developing browser extensions. It allows a remote attacker to bypass existing security restrictions. WebExtensions can use request redirection and a "filterResponseData" filter to bypass host permission settings, redirect network traffic, and access content from a host without explicit user permission.

Recommendations For Firefox ESR versions prior to 60, update to version 60 or later to resolve the issue. For Firefox versions prior to 60, update to version 60 or later to resolve the issue. As a temporary workaround, consider restricting the use of WebExtensions that utilize request redirection and the filterResponseData filter until a patch is available.

Fix

Improper Privilege Management

Incorrect Privilege Assignment

Weakness Enumeration

CWE-269

CWE-266

Related Identifiers

ALT-PU-2018-1787

ALT-PU-2018-1854

BDU:2019-03317

CVE-2018-5166

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

SUSE-SU-2019:2872-1

USN-3645-1

USN-3645-2

Affected Products

Alt Linux

Firefox

Suse

Ubuntu

References · 1933

• https://osv.dev/vulnerability/CVE-2018-5166 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:14572-1 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2018-11 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:2872-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5182 · Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1437325 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-5166 · Security Note
• https://ubuntu.com/security/CVE-2018-5157 · Vendor Advisory
• https://usn.ubuntu.com/3645-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5160 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5154 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3645-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5159 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-5166 · Security Note
• https://ubuntu.com/security/CVE-2018-5177 · Vendor Advisory