CVE-2017-5434

Name: CVE-2017-5434
Creator: NVD / NIST
Published: 2018-06-11T21:29:05.703+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.65%

Last modified Jun 17, 2026

CVE-2017-5434 is a vulnerability of currently unknown severity. A use-after-free vulnerability occurs when redirecting focus handling which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.. EPSS estimates a 3.65% chance of exploitation in the next 30 days.

Description

A use-after-free vulnerability occurs when redirecting focus handling which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Metrics

EPSS Probability

3.65%

88.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
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 Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0
Debian	Debian Linux	8.0
Mozilla	Firefox	< 45.9.0
Mozilla	Firefox	< 53.0
Mozilla	Firefox	52.0
Mozilla	Thunderbird	< 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-2017:1104Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1106Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1201Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1349946Exploit, Issue Tracking
https://www.debian.org/security/2017/dsa-3831Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-11/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-13/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-2017:1104Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1106Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1201Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1349946Exploit, Issue Tracking
https://www.debian.org/security/2017/dsa-3831Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-11/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-13/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2017-5434?

How severe is CVE-2017-5434?

Severity scoring for CVE-2017-5434 is pending analysis. The EPSS model estimates a 3.65% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5434?

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-2017-5434?

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

Scan your code now

Source: NVD / NIST