CVE-2017-7828

Description

A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 34.67% Top 5%
Vendor Advisory debian.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com 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
https://lists.debian.org/debian-lts-announce/2017/12/msg00001.html third party advisory mailing list
https://bugzilla.mozilla.org/show_bug.cgi?id=1406750 issue tracking permissions required third party advisory
https://www.debian.org/security/2017/dsa-4035 third party advisory vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1412252 issue tracking permissions required third party advisory
https://www.mozilla.org/security/advisories/mfsa2017-24/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-25/ vendor advisory
http://www.securityfocus.com/bid/101832 vdb entry third party advisory
https://www.mozilla.org/security/advisories/mfsa2017-26/ vendor advisory
http://www.securitytracker.com/id/1039803 vdb entry third party advisory
https://www.debian.org/security/2017/dsa-4061 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2017/11/msg00018.html third party advisory mailing list
https://access.redhat.com/errata/RHSA-2017:3247 third party advisory vendor advisory
https://www.debian.org/security/2017/dsa-4075 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2017:3372 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-7828?
CVE-2017-7828 has been scored as a critical severity vulnerability.
How to fix CVE-2017-7828?
To fix CVE-2017-7828, 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-2017-7828 being actively exploited in the wild?
It is possible that CVE-2017-7828 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~35% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7828?
CVE-2017-7828 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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