SB2021081317 - Multiple vulnerabilities in F-Secure SAFE Browser
Published: August 13, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Spoofing attack (CVE-ID: CVE-2021-33595)
CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can trick a victim to click on a specially crafted URL and spoof page content.
2) Spoofing attack (CVE-ID: CVE-2021-33594)
CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can trick a victim to click on a specially crafted URL and spoof page content. and performa a dneialof service conriion on the targe system.
3) Improper Restriction of Rendered UI Layers or Frames (CVE-ID: CVE-2021-33596)
CWE-ID: CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remot attacker to compromise the target system.
The vulnerability exists due to showing the legitimate URL in the address bar while loading the content from other domain. A remote authenticated attacker can trick a victim to click on a specially crafted URL and make the user believe that the content is served by a legit domain .
Remediation
Install update from vendor's website.
References
- https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33595
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33594
- https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-33596