CVE-2018-5118

Name: CVE-2018-5118
Creator: NVD / NIST
Published: 2018-06-11T21:29:13.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.58%

Last modified Jun 17, 2026

CVE-2018-5118 is a vulnerability of currently unknown severity. The screenshot images displayed in the Activity Stream page displayed when a new tab is opened is created from the meta tags of websites. An issue was discovered where the page could attempt to create these images through "file:" URLs from the local file system. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

The screenshot images displayed in the Activity Stream page displayed when a new tab is opened is created from the meta tags of websites. An issue was discovered where the page could attempt to create these images through "file:" URLs from the local file system. This loading is blocked by the sandbox but could expose local data if combined with another attack that escapes sandbox protections. This vulnerability affects Firefox < 58.

Metrics

EPSS Probability

1.58%

72.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	<= 57.0.4
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

References

http://www.securityfocus.com/bid/102786Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1420049Issue Tracking
https://usn.ubuntu.com/3544-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
http://www.securityfocus.com/bid/102786Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1420049Issue Tracking
https://usn.ubuntu.com/3544-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-5118?

How severe is CVE-2018-5118?

Severity scoring for CVE-2018-5118 is pending analysis. The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5118?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-5118?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST