KLA11590 Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. Vulnerability can be exploited to bypass security restrictions;
2. Use-after-free vulnerability can be exploited to cause denial of service;
3. Stack buffer overflow vulnerability can be exploited to cause denial of service;
4. Vulnerability related to 360 Total Security can be exploited to execute arbitrary code;
5. Vulnerability related to document.domain can be exploited to execute arbitrary code;
6. Buffer overflow vulnerability in expat can be exploited to arbitrary code execution;
7. Memory safety vulnerability can be exploited to execute arbitrary code;
8. Vulnerability related to HTML parsing can be exploited remotely to bypass security restrictions;

Original advisories

Advisory 2019-33

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2019-15903 warning

CVE-2019-11758 high

CVE-2019-11761 high

CVE-2019-11757 high

CVE-2019-11760 high

CVE-2019-11759 high

CVE-2019-11762 high

CVE-2019-11764 high

CVE-2019-11763 warning

Solution

Update to the latest version

Download Mozilla Firefox ESR

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.

• 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 Firefox earlier than 68.2