KLA11948 Multiple vulnerabilities in Opera

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 media component can be exploited to cause denial of service or execute arbitrary code.
2. Use after free vulnerability in media mode can be exploited to cause denial of service or execute arbitrary code.
3. Use after free vulnerability in IndexedDB can be exploited to cause denial of service or execute arbitrary code.
4. Use after free vulnerability in WebXR can be exploited to cause denial of service or execute arbitrary code.
5. Heap buffer overflow vulnerability in Skia can be exploited to cause denial of service.
6. Use after free vulnerability in ANGLE can be exploited to cause denial of service or execute arbitrary code.
7. Use after free vulnerability in audio mode can be exploited to cause denial of service or execute arbitrary code.
8. Use after free vulnerability in task scheduling component can be exploited to cause denial of service or execute arbitrary code.
9. Use after free vulnerability in Blink can be exploited to cause denial of service or execute arbitrary code.
10. Implementation vulnerability in installer component can be exploited to bypass security vulnerability.
11. Security UI vulnerability in media component can be exploited to spoof user interface.
12. Out of bounds read vulnerability in WebGL can be exploited to cause denial of service.
13. Use after free vulnerability in offline mode can be exploited to cause denial of service or execute arbitrary code.

Original advisories

Changelog for Opera 70

Stable Channel Update for Desktop

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Opera

CVE list

CVE-2020-6547 high

CVE-2020-6550 critical

CVE-2020-6553 critical

CVE-2020-6544 critical

CVE-2020-6542 critical

CVE-2020-6545 critical

CVE-2020-6554 critical

CVE-2020-6551 critical

CVE-2020-6548 critical

CVE-2020-6546 critical

CVE-2020-6543 critical

CVE-2020-6552 critical

CVE-2020-6549 critical

CVE-2020-6555 critical

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 70.0.3728.133