Multiple vulnerabilities in Plone

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU24829

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-7941

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 improper permissions check in "plone.app.contenttypes". A remote attacker can PUT (overwrite) some content without needing write permission.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Plone: 4.3 - 5.2.1

CPE2.3

External links

https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/privilege-escalation-for-overwriting-content
https://www.openwall.com/lists/oss-security/2020/01/22/1

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) Weak password requirements

EUVDB-ID: #VU24828

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-7940

CWE-ID: CWE-521 - Weak Password Requirements

Exploit availability: No

Description

The vulnerability allows an attacker to set weak passwords.

The vulnerability exists due to missing password strength checks on the password reset form or the admin form. A remote authenticated attacker can set weak passwords, leading to easier cracking.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Plone: 4.3 - 5.2.0

CPE2.3

External links

https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/password-strength-checks-were-not-always-checked
https://www.openwall.com/lists/oss-security/2020/01/22/1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU24827

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-7938

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 unspecified error when "plone.restapi" is installed in the add-ons (modules) control panel. A remote authenticated attacker can escalate their privileges up to the highest level.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Plone: 5.2.0 - 5.2.1

CPE2.3

External links

https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/privilege-escalation-when-plone-restapi-is-installed
https://www.openwall.com/lists/oss-security/2020/01/22/1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Cross-site scripting

EUVDB-ID: #VU24826

Risk: Low

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

CVE-ID: CVE-2020-7937

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 title field. A remote authenticated attacker with Editor or Contributor permissions can trick the victim to follow a specially crafted link 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 updates from vendor's website.

Vulnerable software versions

Plone: 5.0 - 5.2.1

CPE2.3

External links

https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/xss-in-the-title-field-on-plone-5-0-and-higher
https://www.openwall.com/lists/oss-security/2020/01/22/1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

5) Open redirect

EUVDB-ID: #VU24825

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-7936

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in the "isURLInPortal" check on the login form. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Plone: 4.0 - 5.2.1

CPE2.3

External links

https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/an-open-redirection-on-the-login-form-and-possibly-other-places
https://www.openwall.com/lists/oss-security/2020/01/22/1

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.

6) SQL injection

EUVDB-ID: #VU24824

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-7939

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data in DTML or in connection objects. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Plone: 4.0 - 5.2.1

CPE2.3

External links

https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/sql-injection-in-dtml-or-in-connection-objects
https://www.openwall.com/lists/oss-security/2020/01/22/1

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.

Risk	High
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2020-7941 CVE-2020-7940 CVE-2020-7938 CVE-2020-7937 CVE-2020-7936 CVE-2020-7939
CWE-ID	CWE-264 CWE-521 CWE-79 CWE-601 CWE-89
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Plone Web applications / CMS
Vendor	Plone