CVE-2018-5096

high-risk

Published 2018-06-11

A use-after-free vulnerability can occur while editing events in form elements on a page, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 52.6 and Thunderbird < 52.6.

Do I need to act?

1.6% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (16)

Debian Linux

Enterprise Linux

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Workstation

Firefox

Thunderbird

Affected Vendors

Debian Redhat Mozilla

References (20)

Third Party Advisory http://www.securityfocus.com/bid/102771

Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0122

Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0262

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1418922

Mailing List https://lists.debian.org/debian-lts-announce/2018/01/msg00030.html

Mailing List https://lists.debian.org/debian-lts-announce/2018/01/msg00036.html

Third Party Advisory https://www.debian.org/security/2018/dsa-4096

Third Party Advisory https://www.debian.org/security/2018/dsa-4102

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-03/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-04/