CVE-2018-5178

Description

A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of data. This vulnerability requires the use of a malicious or vulnerable legacy extension in order to occur. This vulnerability affects Thunderbird ESR < 52.8, Thunderbird < 52.8, and Firefox ESR < 52.8.

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 22.30% Top 5%
Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird ESR
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:1415 third party advisory vendor advisory
https://security.gentoo.org/glsa/201810-01 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:1726 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:1414 third party advisory vendor advisory
https://security.gentoo.org/glsa/201811-13 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-13/ vendor advisory
https://usn.ubuntu.com/3660-1/ third party advisory vendor advisory
http://www.securitytracker.com/id/1040898 third party advisory vdb entry
https://www.debian.org/security/2018/dsa-4199 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00013.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html third party advisory mailing list
https://access.redhat.com/errata/RHSA-2018:1725 third party advisory vendor advisory
http://www.securityfocus.com/bid/104138 third party advisory vdb entry
https://www.debian.org/security/2018/dsa-4209 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-12/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1443891 vendor advisory issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2018-5178?
CVE-2018-5178 has been scored as a high severity vulnerability.
How to fix CVE-2018-5178?
To fix CVE-2018-5178, 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-2018-5178 being actively exploited in the wild?
It is possible that CVE-2018-5178 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~22% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-5178?
CVE-2018-5178 affects Mozilla Thunderbird ESR, Mozilla Thunderbird, Mozilla Firefox ESR.
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