CVE-2017-5439

high-risk
Published 2018-06-11

A use-after-free vulnerability during XSLT processing due to poor handling of template parameters. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

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 (16)

Affected Vendors

Debian Redhat Mozilla

References (24)

Third Party Advisory http://www.securityfocus.com/bid/103053
Third Party Advisory http://www.securityfocus.com/bid/97940
Third Party Advisory http://www.securitytracker.com/id/1038320
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1104
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1106
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1201
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1336830
Third Party Advisory https://www.debian.org/security/2017/dsa-3831
Vendor 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/
Third Party Advisory http://www.securityfocus.com/bid/103053
Third Party Advisory http://www.securityfocus.com/bid/97940
Third Party Advisory http://www.securitytracker.com/id/1038320
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1104
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1106
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1201
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1336830
Third Party Advisory https://www.debian.org/security/2017/dsa-3831
and 4 more references
55
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 5/34 · Minimal
Exposure 18/34 · Moderate