CVE-2023-47320
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk50th percentile - higher than 50% of all known CVEs
Summary
Silverpeas Core 6.3.1 and below contain an incorrect access control vulnerability. An attacker with low privileges can execute the administrator-only function of enabling maintenance mode, making the application unavailable to all users.
Risk Assessment
The risk is that a low-privileged attacker can disable the application for all users, causing a denial of service and potential financial or reputational damage.
Recommendation
Upgrade Silverpeas Core to a version newer than 6.3.1 that fixes the access control issue. If upgrading is not possible, restrict access to administrative functions via firewall rules or ACLs.
Other vulnerabilities in Silverpeas Core
See all- CVE-2023-47327Medium
The 'Create a Space' feature in Silverpeas Core 6.3.1 is reserved for administrators but suffers from broken access control, allowing any authenticated user to create a space by navigating to the correct URL.
- CVE-2023-47326High
Silverpeas Core 6.3.1 is vulnerable to Cross-Site Request Forgery (CSRF) via the Domain SQL Create function. An attacker can exploit this flaw to perform unauthorized actions on behalf of an authenticated user.
- CVE-2023-47325Medium
A vulnerability in Silverpeas Core 6.3.1 administrative 'Bin' feature allows a low-privileged user to access the bin, revealing all deleted spaces. The user can then restore or permanently delete these spaces.
- CVE-2023-47324Medium
Silverpeas Core 6.3.1 is vulnerable to Cross Site Scripting (XSS) via the message/notification feature. An attacker can inject malicious JavaScript code into message content.
- CVE-2023-47323High
The notification/messaging feature of Silverpeas Core 6.3.1 does not enforce access control on the ID parameter. This allows an attacker to read all messages sent between other users; including those sent only to administrators.
- CVE-2023-47322High
The 'userModify' feature in Silverpeas Core 6.3.1 is vulnerable to Cross-Site Request Forgery (CSRF) leading to privilege escalation. If an administrator visits a malicious URL while authenticated, the attacker can become an administrator user.
- CVE-2023-47321Medium
Silverpeas Core 6.3.1 has an incorrect access control vulnerability in the 'Porlet Deployer' component, allowing administrators to deploy .WAR portlets. This could lead to unauthorized code execution or privilege escalation.
Original NVD description (English source)
Silverpeas Core 6.3.1 is vulnerable to Incorrect Access Control. An attacker with low privileges is able to execute the administrator-only function of putting the application in "Maintenance Mode" due to broken access control. This makes the application unavailable to all users. This affects Silverpeas Core 6.3.1 and below.