SB2018041105 - Multiple vulnerabilities in Frog CMS

Description

This security bulletin contains information about 3 vulnerabilities.

1) Cross-site scripting (CVE-ID: CVE-2018-9992)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error when processing name of a new "File" or "Directory" on the "admin/?/plugin/file_manager/browse/" page. A remote attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

2) Cross-site scripting (CVE-ID: CVE-2018-9991)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in the Name and Username parameters on "/admin/?/user/add" page. A remote attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

3) Cross-site request forgery (CVE-ID: CVE-2018-8908)

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

CVSSv4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform CSRF attacks.

The vulnerability exists due to improper handling of the HTTP request origin in "/admin/?/user/add" URL. A remote attacker can trick the victim into visiting a specially specially crafted web page and create a user with administrative privileges.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://gist.github.com/priyanksethi/48cce2fc4257213c8aca91e3c82a4ad3
• https://gist.github.com/prafagr/98e625d2da82c5b9a7d75e6c3e947a63
• http://securitywarrior9.blogspot.in/2018/03/cross-site-request-forgery-frog-cms-cve.html
• https://www.exploit-db.com/exploits/44383/