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CVE-2018-18495

N/A
Published: February 28, 2019 at 06:00 PM UTC
Updated: June 17, 2026 at 01:47 AM UTC
2 products affected across 2 vendorsUbuntu LinuxFirefox

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Severity
N/A
Exploit prediction
EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.0418.10
Firefox· Mozilla
95%
v < 64v < 64.0
Affected range stops below 64, so it looks safe — our inference, not a vendor statement
Affected range stops below 64.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/106167
x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1427585
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3844-1/
x_refsource_CONFIRMx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2018-29/

CVSS

4.3MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-732

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