KLA12178 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 WebRTC can be exploited to cause denial of service or execute arbitrary code.
2. Use after free vulnerability in Omnibox can be exploited to cause denial of service or execute arbitrary code.
3. Policy enforcement vulnerability in extensions can be exploited to bypass security restrictions.
4. Heap buffer overflow vulnerability in Blink can be exploited to cause denial of service.
5. Implementation vulnerability in DevTools can be exploited to potentially cause denial of service.
6. Use after free vulnerability in Media can be exploited to cause denial of service or execute arbitrary code.
7. Policy enforcement vulnerability in WebView can be exploited to bypass security restrictions.
8. Use after free vulnerability in Speech Recognizer can be exploited to cause denial of service or execute arbitrary code.
9. Data validation vulnerability in V8 can be exploited to bypass security restrictions.
10. Use after free vulnerability in WebSQL can be exploited to cause denial of service or execute arbitrary code.
11. Uninitialized use vulnerability in USB can be exploited to bypass security restrictions.
12. Data validation vulnerability in File System API can be exploited to bypass security restrictions.
13. Policy enforcement vulnerability in File System API can be exploited to bypass security restrictions.
14. Security UI vulnerability in Page Info can be exploited to spoof user interface.
15. Policy enforcement vulnerability in Downloads can be exploited to bypass security restrictions.
16. Implementation vulnerability in Performace API can be exploited to potentially cause denial of service.
17. Policy enforcement vulnerability in Cryptohome can be exploited to bypass security restrictions.
18. Implementation vulnerability in iframe sandbox can be exploited to potentially cause denial of service.
19. Use after free vulnerability in DevTools can be exploited to cause denial of service or execute arbitrary code.
20. Use after free vulnerability in Blink can be exploited to cause denial of service or execute arbitrary code.

Original advisories

Changelog for Opera 74

Stable Channel Update for Desktop

Related products

Opera

CVE list

CVE-2020-16044 critical

CVE-2021-21119 critical

CVE-2021-21140 high

CVE-2021-21139 high

CVE-2021-21135 high

CVE-2021-21136 high

CVE-2021-21129 high

CVE-2021-21130 high

CVE-2021-21122 critical

CVE-2021-21134 high

CVE-2021-21125 critical

CVE-2021-21131 high

CVE-2021-21126 high

CVE-2021-21132 critical

CVE-2021-21128 critical

CVE-2021-21120 critical

CVE-2021-21138 critical

CVE-2021-21137 high

CVE-2021-21124 critical

CVE-2021-21117 critical

CVE-2021-21123 high

CVE-2021-21127 critical

CVE-2021-21141 high

CVE-2021-21121 critical

CVE-2021-21133 high

CVE-2021-21118 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.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

• 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 74.0.3911.75