CVE-2017-5455

Name: CVE-2017-5455
Creator: NVD / NIST
Published: 2018-06-11T21:29:06.81+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.57%

Last modified Jun 17, 2026

CVE-2017-5455 is a vulnerability of currently unknown severity. The internal feed reader APIs that crossed the sandbox barrier allowed for a sandbox escape and escalation of privilege if combined with another vulnerability that resulted in remote code execution inside the sandboxed process. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53.. EPSS estimates a 3.57% chance of exploitation in the next 30 days.

Description

The internal feed reader APIs that crossed the sandbox barrier allowed for a sandbox escape and escalation of privilege if combined with another vulnerability that resulted in remote code execution inside the sandboxed process. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53.

Metrics

EPSS Probability

3.57%

87.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux Desktop	7.0
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	7.0
Mozilla	Firefox	< 53.0
Mozilla	Firefox	< 52.1.0

References

http://www.securityfocus.com/bid/97940Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:1106Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1341191Exploit, Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/Vendor Advisory
http://www.securityfocus.com/bid/97940Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:1106Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1341191Exploit, Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2017-5455?

How severe is CVE-2017-5455?

Severity scoring for CVE-2017-5455 is pending analysis. The EPSS model estimates a 3.57% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5455?

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-2017-5455?

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

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Source: NVD / NIST