KLA11720 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.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in speech recognizer can be exploited to cause denial of service and potentially execute arbitrary code.
2. A spoofing vulnerability in Windows CryptoAPI can be exploited remotely to bypass security restrictions.
3. Extension message verification error can be exploited to bypass security restrictions.

Original advisories

Changelog for Opera 66

Stable Channel Update for Desktop

Exploitation

Public exploits exist for this vulnerability.

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

Related products

Opera

CVE list

CVE-2020-0601 high

CVE-2020-6379 high

CVE-2020-6380 high

CVE-2020-6378 high

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.

Affected Products

• Opera earlier than 66.0.3515.44