CVE-2017-5436

high-risk
Published 2018-06-11

An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as Mozilla products. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Do I need to act?

-
0.99% chance of exploitation
EPSS score — low 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
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (18)

Affected Vendors

Debian Redhat Mozilla Sil

References (24)

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
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1345461
Third Party Advisory https://security.gentoo.org/glsa/201706-25
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/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
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1345461
Third Party Advisory https://security.gentoo.org/glsa/201706-25
Third Party Advisory https://www.debian.org/security/2017/dsa-3831
and 4 more references
52
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 3/34 · Minimal
Exposure 19/34 · Moderate