SB2019061401 - Multiple vulnerabilities in Mozilla Thunderbird
Published: June 14, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2019-11703)
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.
2) Heap-based buffer overflow (CVE-ID: CVE-2019-11704)
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 icalmemory_strdup_and_dequote function in icalvalue.c. A remote attacker can create 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.
3) Stack-based buffer overflow (CVE-ID: CVE-2019-11705)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within iCal implementation in icalrecur_add_bydayrules function in icalrecur.c. A remote unauthenticated attacker can create a specially crafted email, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Type Confusion (CVE-ID: CVE-2019-11706)
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.
Remediation
Install update from vendor's website.