Heap-based buffer overflow in Mozilla Thunderbird - CVE-2019-11703
Published: June 14, 2019 / Updated: June 17, 2021
Vulnerability identifier: #VU18797
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2019-11703
CWE-ID: CWE-122
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 execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the iCal implementation in parser_get_next_char function in icalparser.c. A remote attacker can send a specially crafted email, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-11703
Install updates from vendor's website.