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, spoof user interface, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A use after free vulnerability in File API can be exploited to cause denial of service or execute arbitrary code.
2. A heap buffer overflow vulnerability in History can be exploited to cause denial of service.
3. A security UI vulnerability in Web App Installs can be exploiteed to spoof user interface.
4. A use after free vulnerability in Autofill can be exploited to cause denial of service or execute arbitrary code.
5. An out of bounds write vulnerability in Tab Strip can be exploited to cause denial of service.
6. A race condition vulnerability in Aura can be exploited to bypass security restrictions.
7. A use after free vulnerability in Payments can be exploited to cause denial of service or execute arbitrary code.
8. A type confusion vulnerability in V8 can be exploited to cause denial of service.
9. A heap buffer overflow vulnerability in Media Feeds can be exploited to cause denial of service.
10. An implementation vulnerability in Offline can be exploited to cause denial of service.
11. A use after free vulnerability in Tab Strip can be exploited to cause denial of service or execute arbitrary code.
12. A use after free vulnerability in Notifications can be exploited to cause denial of service or execute arbitrary code.
13. An out of bounds read vulnerability in Tab Groups can be exploited to cause denial of service.
14. A heap buffer overflow vulnerability in Reader Mode can be exploited to cause denial of service.

Original advisories

• Stable Channel Update for Desktop

• Changelog for Opera 76

Related products

• Opera

CVE list

• CVE-2021-30507
  critical
• CVE-2021-30516
  critical
• CVE-2021-30519
  critical
• CVE-2021-30515
  critical
• CVE-2021-30506
  critical
• CVE-2021-30514
  critical
• CVE-2021-30517
  critical
• CVE-2021-30513
  critical
• CVE-2021-30518
  critical
• CVE-2021-30509
  critical
• CVE-2021-30508
  critical
• CVE-2021-30512
  critical
• CVE-2021-30520
  critical
• CVE-2021-30510
  critical
• CVE-2021-30511
  critical

KB list

• 5003695
• 5003636
• 5003661
• 5003667
• 5003694

Read more

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