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, obtain sensitive information, spoof user interface, 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 information disclosure vulnerability can be exploited via special crafted webpage to obtain sensitive information.
3. A security UI vulnerability can be exploited via special crafted extention to spoof user interface and obtain sensitive information.
4. An out of bounds read vulnerability in WebGL can be exploited via special crafted object to cause denial of service or obtain sensitive information.
5. A transient execution vulnerability can be exploited to obtain sensitive infromation or cause denial of service.
6. A security bypass vulnerability in Angle graphics library can be exploited to bypass security restrictions.

Original advisories

• MFSA2021-11

Related products

• Mozilla-Firefox-ESR

CVE list

• CVE-2021-23987
  critical
• CVE-2021-23982
  high
• CVE-2021-23984
  high
• CVE-2021-23981
  critical
• CVE-2021-29955
  high
• CVE-2021-4127
  critical

Read more

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