KLA12031 Multiple vulnerabilities in Mozilla Thunderbird

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to obtain sensitive information, bypass security restrictions, cause denial of service, execute arbitrary code.

Below is a complete list of vulnerabilities:

1. A security bypass vulnerability in proxy.onRequest can be exploited remotely to bypass security restrictions and obtain sensitive information.
2. A security bypass vulnerability for Windows can be exploited to bypass security restrictions.
3. A use after free vulnerability in StyleGenericFlexBasis object can be exploited to potentially cause denial of service.
4. A heap buffer overflow vulnerability in WebGL can be exploited to potentially cause denial of service.
5. A memory corruption vulnerability can be exploited to execute arbitrary code.
6. A security bypass bypass vulnerability in slipstream can be exploited to obtain sensitive information.
7. A security bypass vulnerability in CSS Sanitizer can be exploited to bypass security restrictions.
8. A uninitialized use vulnerability in V8 can be exploited to obtain sensitive informtaion and bypass security restrictions.

Original advisories

MFSA2020-56

Related products

Mozilla-Thunderbird

CVE list

CVE-2020-16042 high

CVE-2020-35111 warning

CVE-2020-35112 critical

CVE-2020-26974 critical

CVE-2020-26971 critical

CVE-2020-35113 critical

CVE-2020-26978 high

CVE-2020-26973 critical

Solution

Update to the latest version

Download Thunderbird

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Mozilla Thunderbird earlier than 78.6