KLA12295 Multiple vulnerabilities in Opera

Multiple vulnerabilities were found in Opera. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. Type confusion vulnerability in Blink layout can be exploited to cause denial of service.
2. Stack buffer overflow vulnerability in ANGLE can be exploited to cause denial of service or execute arbitrary code.
3. Use after free vulnerability in Indexed DB API can be exploited to cause denial of service or execute arbitrary code.
4. Implementation vulnerability in Blink can be exploited to cause denial of service.
5. Out of bounds write vulnerability in V8 can be exploited to cause denial of service or execute arbitrary code.
6. Use after free vulnerability in Selection API can be exploited to cause denial of service or execute arbitrary code.
7. Use after free vulnerability in Permissions can be exploited to cause denial of service or execute arbitrary code.
8. Out of bounds memory access vulnerability in ANGLE can be exploited to cause denial of service, execute arbitrary code or obtain sensitive information.

Original advisories

Changelog for Opera 79

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-2021-30628 critical

CVE-2021-30633 critical

CVE-2021-30630 warning

CVE-2021-30632 critical

CVE-2021-30629 critical

CVE-2021-30627 critical

CVE-2021-30626 critical

CVE-2021-30625 critical

CVE-2021-30631 warning

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.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• 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 79.0.4143.50