Type Confusion in Mozilla Thunderbird - CVE-2019-11706
Published: June 14, 2019 / Updated: June 17, 2021
Vulnerability identifier: #VU18800
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-11706
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Mozilla
Affected software:
Mozilla Thunderbird
Mozilla Thunderbird
Detailed vulnerability description
The vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a type confusion error within the iCal implementation in icaltimezone_get_vtimezone_properties function in icalproperty.c. A remote attacker can create a specially crafted email with malformed timezone data, trigger a type confusion error and crash the application.
How to mitigate CVE-2019-11706
Install updates from vendor's website.