Multiple vulnerabilities in Opera

Description

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

Exploitation

Public exploits exist for this vulnerability.

Related products

• Opera

CVE list

• CVE-2021-30591
  critical
• CVE-2021-30590
  critical
• CVE-2021-30597
  high
• CVE-2021-30592
  critical
• CVE-2021-30594
  high
• CVE-2021-30593
  critical
• CVE-2021-30596
  warning

Read more

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