Multiple vulnerabilities in Strapi



Published: 2020-10-26
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-27666
CVE-2020-27665
CVE-2020-27664
CWE-ID CWE-79
CWE-264
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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strapi
Web applications / CMS

Vendor strapi.io

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Stored cross-site scripting

EUVDB-ID: #VU47916

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-27666

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 the wysiwyg editor's preview feature. A remote attacker can 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

strapi: 3.2.0 - 3.2.4


CPE2.3 External links

http://github.com/strapi/strapi/pull/8440
http://github.com/strapi/strapi/releases/tag/v3.2.5

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU47917

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-27665

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to no admin::hasPermissions restriction for CTB (aka content-type-builder) routes, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

strapi: 3.2.0 - 3.2.4


CPE2.3 External links

http://github.com/strapi/strapi/pull/8439
http://github.com/strapi/strapi/releases/tag/v3.2.5

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Input validation error

EUVDB-ID: #VU47918

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-27664

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to unwanted /proxy?url= functionality in "admin/src/containers/InputModalStepperProvider/index.js".

Mitigation

Install updates from vendor's website.

Vulnerable software versions

strapi: 3.2.0 - 3.2.4


CPE2.3 External links

http://github.com/strapi/strapi/pull/8442
http://github.com/strapi/strapi/releases/tag/v3.2.5

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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