CVE-2017-5400

Description

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.17% Top 25%
Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/96654 third party advisory vdb entry
http://rhn.redhat.com/errata/RHSA-2017-0459.html third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-09/ vendor advisory
https://www.debian.org/security/2017/dsa-3832 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-07/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-05/ vendor advisory
http://www.securitytracker.com/id/1037966 third party advisory vdb entry
https://security.gentoo.org/glsa/201705-06 third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0461.html third party advisory vendor advisory
https://www.debian.org/security/2017/dsa-3805 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-06/ vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0498.html third party advisory vendor advisory
https://security.gentoo.org/glsa/201705-07 third party advisory vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1334933 issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2017-5400?
CVE-2017-5400 has been scored as a critical severity vulnerability.
How to fix CVE-2017-5400?
To fix CVE-2017-5400, 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-2017-5400 being actively exploited in the wild?
It is possible that CVE-2017-5400 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-2017-5400?
CVE-2017-5400 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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