Multiple vulnerabilities in Opera

Description

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in WebRTC can be exploited to cause denial of service or execute arbitrary code.
2. Use after free vulnerability in Omnibox can be exploited to cause denial of service or execute arbitrary code.
3. Policy enforcement vulnerability in extensions can be exploited to bypass security restrictions.
4. Heap buffer overflow vulnerability in Blink can be exploited to cause denial of service.
5. Implementation vulnerability in DevTools can be exploited to potentially cause denial of service.
6. Use after free vulnerability in Media can be exploited to cause denial of service or execute arbitrary code.
7. Policy enforcement vulnerability in WebView can be exploited to bypass security restrictions.
8. Use after free vulnerability in Speech Recognizer can be exploited to cause denial of service or execute arbitrary code.
9. Data validation vulnerability in V8 can be exploited to bypass security restrictions.
10. Use after free vulnerability in WebSQL can be exploited to cause denial of service or execute arbitrary code.
11. Uninitialized use vulnerability in USB can be exploited to bypass security restrictions.
12. Data validation vulnerability in File System API can be exploited to bypass security restrictions.
13. Policy enforcement vulnerability in File System API can be exploited to bypass security restrictions.
14. Security UI vulnerability in Page Info can be exploited to spoof user interface.
15. Policy enforcement vulnerability in Downloads can be exploited to bypass security restrictions.
16. Implementation vulnerability in Performace API can be exploited to potentially cause denial of service.
17. Policy enforcement vulnerability in Cryptohome can be exploited to bypass security restrictions.
18. Implementation vulnerability in iframe sandbox can be exploited to potentially cause denial of service.
19. Use after free vulnerability in DevTools can be exploited to cause denial of service or execute arbitrary code.
20. Use after free vulnerability in Blink can be exploited to cause denial of service or execute arbitrary code.

Original advisories

• Changelog for Opera 74

• Stable Channel Update for Desktop

Exploitation

Public exploits exist for this vulnerability.

Related products

• Opera

CVE list

• CVE-2020-16044
  critical
• CVE-2021-21119
  critical
• CVE-2021-21140
  high
• CVE-2021-21139
  high
• CVE-2021-21135
  high
• CVE-2021-21136
  high
• CVE-2021-21129
  high
• CVE-2021-21130
  high
• CVE-2021-21122
  critical
• CVE-2021-21134
  high
• CVE-2021-21125
  critical
• CVE-2021-21131
  high
• CVE-2021-21126
  high
• CVE-2021-21132
  critical
• CVE-2021-21128
  critical
• CVE-2021-21120
  critical
• CVE-2021-21138
  critical
• CVE-2021-21137
  high
• CVE-2021-21124
  critical
• CVE-2021-21117
  critical
• CVE-2021-21123
  high
• CVE-2021-21127
  critical
• CVE-2021-21141
  high
• CVE-2021-21121
  critical
• CVE-2021-21133
  high
• CVE-2021-21118
  critical

Read more

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