Multiple vulnerabilities in Mozilla Firefox ESR

Description

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

Below is a complete list of vulnerabilities:

1. A memory safety vulnerability can be exploited to execute arbitrary code.
2. An out of bounds write vulnerability in ANGLE can be exploited to cause denial of service or execute arbitrary code.
3. A use after free vulnerability can be exploited via special crafted webpage to cause denial of service or execute arbitrary code.

Original advisories

• MFSA2021-29

Exploitation

Public exploits exist for this vulnerability.

Related products

• Mozilla-Firefox-ESR

CVE list

• CVE-2021-30547
  critical
• CVE-2021-29976
  critical
• CVE-2021-29970
  critical

Read more

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