Multiple vulnerabilities in Mozilla Firefox ESR

Description

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in Web Worker can be exploited to potentially cause denial of service.
2. Sandbox escape vulnerability on Windows to cause denial of service.
3. Security bypass vulnerability in ‘Copy as cURL’ component on Windows can be exploited to bypass security restrictions and execute arbitrary code.
4. Security bypass vulnerability in ‘Copy as cURL’ component can be exploited to bypass security restrictions and obtain sensitive information.
5. Stack buffer overflow vulnerability in SCTP component can be exploited to potentially cause denial of service.
6. Memory corruption vulnerability can be exploited to execute arbitrary code.

Original advisories

• MFSA2020-17

Exploitation

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

Related products

• Mozilla-Firefox-ESR

CVE list

• CVE-2020-6831
  critical
• CVE-2020-12387
  high
• CVE-2020-12388
  critical
• CVE-2020-12393
  warning
• CVE-2020-12392
  warning
• CVE-2020-12389
  critical
• CVE-2020-12395
  critical

Read more

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