KLA12269 Multiple vulnerabilities in Opera

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in Page Info UI can be exploited to cause denial of service or execute arbitrary code.
2. Heap buffer overflow vulnerability in Bookmarks can be exploited to cause denial of service or execute arbitrary code.
3. Use after free vulnerability in Browser UI can be exploited to cause denial of service or execute arbitrary code.
4. Out of bounds read vulnerability in Tab Strip can be exploited to cause denial of service or obtain sensitive information.
5. Use after free vulnerability in File System API can be exploited to cause denial of service or execute arbitrary code.
6. Incorrect security UI vulnerability in Navigation can be exploited to obtain sensitive information and spoof user interface.
7. Out of bounds write vulnerability in Tab Groups can be exploited to cause denial of service or execute arbitrary code.

Original advisories

Changelog for Opera 78

Stable Channel Update for Desktop

Related products

Opera

CVE list

CVE-2021-30591 unknown

CVE-2021-30590 unknown

CVE-2021-30597 unknown

CVE-2021-30592 unknown

CVE-2021-30594 unknown

CVE-2021-30593 unknown

CVE-2021-30596 unknown

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.

• 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 78.0.4093.147