KLA12240 Multiple vulnerabilities in Opera

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in WebSerial can be exploited to cause denial of service or execute arbitrary code.
2. Heap buffer overflow vulnerability in WebXR can be exploited to cause denial of service.
3. Type confusion vulnerabulity in V8 can be exploited to cause denial of service.
4. Use after free vulnerability in Blink XSLT can be exploited to cause denial of service or execute arbitrary code.
5. Use after free vulnerability in V8 can be exploited to cause denial of service or execute arbitrary code.
6. Out of bounds write vulnerability in ANGLE can be exploited to cause denial of service or execute arbitrary code.

Original advisories

Changelog for Opera 77

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-2021-30541 unknown

CVE-2021-30564 unknown

CVE-2021-30562 unknown

CVE-2021-30560 unknown

CVE-2021-30563 unknown

CVE-2021-30561 unknown

CVE-2021-30559 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.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

Affected Products

• Opera earlier than 77.0.4054.277