KLA12188 Multiple vulnerabilities in Opera

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

Solution

Update to the latest version

Download Opera

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Opera earlier than 76.0.4017.154