CVE-2017-5436

Description

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.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.05% Top 25%
Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2017:1106 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-11/ vendor advisory
https://security.gentoo.org/glsa/201706-25 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/ vendor advisory
http://www.securityfocus.com/bid/97940 vdb entry third party advisory
https://www.debian.org/security/2017/dsa-3831 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-13/ vendor advisory
http://www.securitytracker.com/id/1038320 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2017:1104 third party advisory vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1345461 issue tracking vendor advisory
https://access.redhat.com/errata/RHSA-2017:1201 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-5436?
CVE-2017-5436 has been scored as a high severity vulnerability.
How to fix CVE-2017-5436?
To fix CVE-2017-5436, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-5436 being actively exploited in the wild?
It is possible that CVE-2017-5436 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-5436?
CVE-2017-5436 affects Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox.
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