KLA11925 Multiple vulnerabilites in Opera

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in WebUSB can be exploited to cause denial of service.
2. Heap buffer overflow vulnerability in Skia can be exploited to cause denial of service.
3. Use after free vulnerability in SCTP can be exploited to cause denial of service.
4. Implementation vulnerability in WebView can be exploited to potentially cause denial of service or execute arbitrary code.
5. Type confusion vulnerability in V8 can be exploited to potentially cause denial of service.
6. Use after free vulnerability in CSS can be exploited to cause denial of service.
7. Script injection vulnerability in iOSWeb can be exploited remotely to 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-2020-6541 critical

CVE-2020-6540 critical

CVE-2020-6532 critical

CVE-2020-6538 high

CVE-2020-6537 critical

CVE-2020-6539 critical

CVE-2020-16046 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 70.0.3728.95