Multiple vulnerabilities in comments plugin for Craft CMS



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-13868
CVE-2020-13870
CWE-ID CWE-352
CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
 comments
Web applications / Modules and components for CMS

Vendor Verbb

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site request forgery

EUVDB-ID: #VU29019

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-13868

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin in "CommentsController.php". A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

comments: 0.3.6 - 1.5.4

CPE2.3 External links

https://github.com/verbb/comments/blob/craft-3/CHANGELOG.md#155---2020-05-28-critical
https://github.com/verbb/comments/commit/5432bc1ccbd9044a50262914a949450fc65250ac


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Stored cross-site scripting

EUVDB-ID: #VU29021

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-13870

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

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in asset volume name. A remote attacker can permanently inject and execute arbitrary HTML and script code in user's browser in 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

comments: 0.3.6 - 1.5.4

CPE2.3 External links

https://github.com/verbb/comments/blob/craft-3/CHANGELOG.md#155---2020-05-28-critical


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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