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CVE-2021-33594— F-Secure Safe browser for Android vulnerable to Address Bar Spoofing

Quick assessment

Affected
F-Secure F-Secure Mobile Security
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

F-secure F-Secure SAFE是芬兰F-Secure（F-secure）公司的一套杀毒软件。 F-secure Safe Browser 中存在安全漏洞，该漏洞源于产品实现存在缺陷。当用户点击恶意链接时，浏览器地址栏会展示一个合法URL但是会展示恶意链接的内容。以下产品及版本受到影响: F-Secure SAFE Browser 18.3.x 版本及之前版本。

CVSS 3.5 · Low EPSS 1.07% · P62

Possible ATT&CK Techniques 1 AI

T1134.004 · Parent PID Spoofing
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I. Basic Information for CVE-2021-33594

Vulnerability Information
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Vulnerability Title
F-Secure Safe browser for Android vulnerable to Address Bar Spoofing
Source: CVE Program / CVE List V5
Vulnerability Description
An address bar spoofing vulnerability was discovered in Safe Browser for Android. When user clicks on a specially crafted a malicious URL, it appears like a legitimate one on the address bar, while the content comes from other domain and presented in a window, covering the original content. A remote attacker can leverage this to perform address bar spoofing attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
F-secure Safe 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F-secure F-Secure SAFE是芬兰F-Secure（F-secure）公司的一套杀毒软件。 F-secure Safe Browser 中存在安全漏洞，该漏洞源于产品实现存在缺陷。当用户点击恶意链接时，浏览器地址栏会展示一个合法URL但是会展示恶意链接的内容。以下产品及版本受到影响: F-Secure SAFE Browser 18.3.x 版本及之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
F-Secure F-Secure Mobile Security 18.4x ~ 18.3x* -

II. Public POCs for CVE-2021-33594

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III. Intelligence Information for CVE-2021-33594

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Other References for CVE-2021-33594 (3)

IV. Related Vulnerabilities

Same product: F-Secure Mobile Security
Same vendor: F-Secure

V. Comments for CVE-2021-33594

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