SB2020020303 - Multiple vulnerabilities in Plone
Published: February 3, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-7941)
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.
2) Weak password requirements (CVE-ID: CVE-2020-7940)
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.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-7938)
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.
4) Cross-site scripting (CVE-ID: CVE-2020-7937)
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.
5) Open redirect (CVE-ID: CVE-2020-7936)
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.
6) SQL injection (CVE-ID: CVE-2020-7939)
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.
Remediation
Install update from vendor's website.
References
- http://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
- https://plone.org/security/hotfix/20200121/password-strength-checks-were-not-always-checked
- https://plone.org/security/hotfix/20200121/privilege-escalation-when-plone-restapi-is-installed
- https://plone.org/security/hotfix/20200121/xss-in-the-title-field-on-plone-5-0-and-higher
- https://plone.org/security/hotfix/20200121/an-open-redirection-on-the-login-form-and-possibly-other-places
- https://plone.org/security/hotfix/20200121/sql-injection-in-dtml-or-in-connection-objects