CVE-2018-5117

Name: CVE-2018-5117
Creator: NVD / NIST
Published: 2018-06-11T21:29:13.577+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.39%

Last modified Jun 17, 2026

CVE-2018-5117 is a vulnerability of currently unknown severity. If right-to-left text is used in the addressbar with left-to-right alignment, it is possible in some circumstances to scroll this text to spoof the displayed URL. This issue could result in the wrong URL being displayed as a location, which can mislead users to believe they are on a different site than the one loaded. EPSS estimates a 2.39% chance of exploitation in the next 30 days.

Description

If right-to-left text is used in the addressbar with left-to-right alignment, it is possible in some circumstances to scroll this text to spoof the displayed URL. This issue could result in the wrong URL being displayed as a location, which can mislead users to believe they are on a different site than the one loaded. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

Metrics

EPSS Probability

2.39%

81.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Redhat	Enterprise Linux	6.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	7.3
Redhat	Enterprise Linux Server Aus	7.4
Redhat	Enterprise Linux Server Eus	7.3
Redhat	Enterprise Linux Server Eus	7.4
Redhat	Enterprise Linux Server Eus	7.5
Redhat	Enterprise Linux Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0
Mozilla	Firefox	< 58.0
Mozilla	Firefox	< 52.6.0
Mozilla	Thunderbird	< 52.6.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

References

http://www.securityfocus.com/bid/102783Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:0122Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0262Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1395508Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00030.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00036.htmlThird Party Advisory
https://usn.ubuntu.com/3544-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4096Third Party Advisory
https://www.debian.org/security/2018/dsa-4102Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-03/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-04/Vendor Advisory
http://www.securityfocus.com/bid/102783Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:0122Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0262Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1395508Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00030.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/01/msg00036.htmlThird Party Advisory
https://usn.ubuntu.com/3544-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4096Third Party Advisory
https://www.debian.org/security/2018/dsa-4102Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-03/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-04/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-5117?

How severe is CVE-2018-5117?

Severity scoring for CVE-2018-5117 is pending analysis. The EPSS model estimates a 2.39% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5117?

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-2018-5117?

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

Scan your code now

Source: NVD / NIST