Multiple vulnerabilities in Mozilla Firefox ESR

Description

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

Below is a complete list of vulnerabilities:

1. Information disclosure vulnerability in Cloud Clipboard for Windows can be exploited to obtain sensitive information.
2. Security UI vulnerability can be exploited to spoof user interface or obtain sensitive information.
3. Security vulnerability in iframe sandbox rules can be exploited to bypass security restrictions.
4. Code execution vulnerability for MacOS can be exploited via special .inetloc files to execute arbitrary code.
5. Use after free vulnerability in file picker dialog can be exploited to cause denial of service.
6. Security vulnerability can be exploited to bypass security restrictions and spoof user interface.
7. Security bypass vulnerability in HTTP2 can be exploited to bypass security restrictions.
8. Security UI vulnerability in Javascript alert box can be exploited to spoof user interface.
9. Memory safety vulnerability can be exploited to execute arbitrary code.
10. Use after free vulnerability in HTTP2 Session object can be exploited to cause denial of service.

Original advisories

• MFSA2021-49

Related products

• Mozilla-Firefox-ESR

CVE list

• CVE-2021-38505
  high
• CVE-2021-38506
  warning
• CVE-2021-38503
  critical
• CVE-2021-38510
  critical
• CVE-2021-38504
  critical
• CVE-2021-38508
  warning
• CVE-2021-38507
  high
• CVE-2021-38509
  warning
• CVE-2021-43535
  critical
• CVE-2021-43534
  critical

Read more

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