CVE-2019-11703

Public Exploit

Description

A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 8.05% Top 10%
Vendor Advisory gentoo.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2019-17/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1553820 vendor advisory issue tracking exploit
https://security.gentoo.org/glsa/201908-20 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11703?
CVE-2019-11703 has been scored as a critical severity vulnerability.
How to fix CVE-2019-11703?
To fix CVE-2019-11703, 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-2019-11703 being actively exploited in the wild?
It is possible that CVE-2019-11703 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11703?
CVE-2019-11703 affects Mozilla Thunderbird.
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