CVE-2017-5472

high-risk
Published 2018-06-11

A use-after-free vulnerability with the frameloader during tree reconstruction while regenerating CSS layout when attempting to use a node in the tree that no longer exists. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Do I need to act?

~
1.9% 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
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (17)

Affected Vendors

Debian Redhat Mozilla

References (20)

Third Party Advisory http://www.securityfocus.com/bid/99040
Third Party Advisory http://www.securitytracker.com/id/1038689
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1440
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1561
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1365602
Third Party Advisory https://www.debian.org/security/2017/dsa-3881
Third Party Advisory https://www.debian.org/security/2017/dsa-3918
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-15/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-16/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-17/
Third Party Advisory http://www.securityfocus.com/bid/99040
Third Party Advisory http://www.securitytracker.com/id/1038689
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1440
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1561
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1365602
Third Party Advisory https://www.debian.org/security/2017/dsa-3881
Third Party Advisory https://www.debian.org/security/2017/dsa-3918
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-15/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-16/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-17/
56
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 5/34 · Minimal
Exposure 19/34 · Moderate