CVE-2017-7801

Name: CVE-2017-7801
Creator: NVD / NIST
Published: 2018-06-11T21:29:09.843+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.68%

Last modified Jun 17, 2026

CVE-2017-7801 is a vulnerability of currently unknown severity. A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where the updated style object is freed while still in use. This results in a potentially exploitable crash. EPSS estimates a 2.68% chance of exploitation in the next 30 days.

Description

A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where the updated style object is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Metrics

EPSS Probability

2.68%

83.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
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	< 55.0
Mozilla	Firefox	< 52.3.0
Mozilla	Thunderbird	< 52.3.0

References

http://www.securityfocus.com/bid/100197Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039124Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2456Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2534Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1371259Exploit, Issue Tracking, Patch, Vendor Advisory
https://security.gentoo.org/glsa/201803-14Third Party Advisory
https://www.debian.org/security/2017/dsa-3928Third Party Advisory
https://www.debian.org/security/2017/dsa-3968Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-19/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-20/Vendor Advisory
http://www.securityfocus.com/bid/100197Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039124Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2456Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2534Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1371259Exploit, Issue Tracking, Patch, Vendor Advisory
https://security.gentoo.org/glsa/201803-14Third Party Advisory
https://www.debian.org/security/2017/dsa-3928Third Party Advisory
https://www.debian.org/security/2017/dsa-3968Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-19/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-20/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2017-7801?

How severe is CVE-2017-7801?

Severity scoring for CVE-2017-7801 is pending analysis. The EPSS model estimates a 2.68% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7801?

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-2017-7801?

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

Scan your code now

Source: NVD / NIST