Multiple vulnerabilities in Opera

Description

Multiple vulnerabilities were found in Opera. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code, inject malicious code, spoof user interface, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. Heap buffer overflow vulnerability in BFCache can be exploited to cause denial of service.
2. Use after free vulnerability in web apps can be exploited to cause denial of service or execute arbitrary code.
3. Use after free vulnerability in developer tools can be exploited to cause denial of service or execute arbitrary code.
4. Use after free vulnerability in UI can be exploited to cause denial of service or execute arbitrary code.
5. Use after free vulnerability in windows manager can be exploited to cause denial of service or execute arbitrary code.
6. Type confusion vulnerability in V8 can be exploited to cause denial of service.
7. Use after free vulnerability in file API can be exploited to cause denial of service or execute arbitrary code.
8. Data validation vulnerability in loader can be exploited to bypass security restrictions.
9. Use after free vulnerability in autofill can be exploited to cause denial of service or execute arbitrary code.
10. Security UI vulnerability in autofill can be exploited to spoof user interface.
11. Integer underflow vulnerability in ANGLE can be exploited to cause denial of service.
12. Heap buffer overflow vulnerability in extensions can be exploited to cause denial of service.
13. Type confusion vulnerability in loader can be exploited to cause denial of service.
14. Validation of untrusted input vulnerability in new tab page can be exploited to bypass security restrictions.
15. Out of bounds write vulnerability in WebRTC can be exploited to cause denial of service or execute arbitrary code.
16. Heap buffer overflow vulnerability in ANGLE can be exploited to cause denial of service.
17. Use after free vulnerability in screen capture can be exploited to cause denial of service or execute arbitrary code.

Original advisories

• Changelog for Opera 82

• Stable Channel Update for Desktop

Related products

• Opera

CVE list

• CVE-2021-4063
  critical
• CVE-2021-4052
  critical
• CVE-2021-4055
  critical
• CVE-2021-4064
  critical
• CVE-2021-4053
  critical
• CVE-2021-4059
  high
• CVE-2021-4057
  critical
• CVE-2021-4061
  critical
• CVE-2021-4068
  high
• CVE-2021-4066
  critical
• CVE-2021-4058
  critical
• CVE-2021-4054
  high
• CVE-2021-4067
  critical
• CVE-2021-4062
  critical
• CVE-2021-4056
  critical
• CVE-2021-4065
  critical
• CVE-2021-4079
  critical
• CVE-2021-4078
  critical

Read more

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