Zimbra Collaboration Suite vulnerability CVE-2024-27442, CVE-2024-27443, CVE-2024-33533, CVE-2024-33535, CVE-2024-33536
Recent vulnerabilities have been discovered in Zimbra Collaboration Suite (ZCS) versions 9.0 and 10.0, raising significant security concerns for users of this platform.
CVE-2024-27442: Local Privilege Escalation
*Overview: CVE-2024-27442 is a local privilege escalation vulnerability affecting the `zmmailboxdmgr` binary, which is intended to be executed by the `zimbra` user with root privileges for mailbox operations. Due to improper handling of input arguments, an attacker can escalate privileges from the `zimbra` user to root, allowing them to execute arbitrary commands with elevated privileges.
- *Severity: Rated as HIGH with a CVSS v3.1 score of 7.8, this vulnerability poses a serious risk, potentially allowing attackers to gain full control over affected systems.
- *Impact: Successful exploitation could lead to unauthorized access to sensitive information and system manipulation, making it critical for organizations to address this vulnerability promptly.
CVE-2024-33536: JavaScript Injection
*Overview: This vulnerability arises from inadequate input validation of the `res` parameter, allowing authenticated attackers to inject and execute arbitrary JavaScript code in another user's browser session. By uploading a malicious JavaScript file and crafting a URL with its location, an attacker can exploit this vulnerability.
- *Severity: Rated as MEDIUM with a CVSS v3.1 score of 5.4.
- *Impact: This vulnerability can lead to session hijacking and unauthorized actions performed in the context of another user, compromising user data and privacy.
CVE-2024-33535: Unauthenticated Local File Inclusion
*Overview: CVE-2024-33535 involves unauthenticated local file inclusion (LFI) in a web application, specifically affecting the handling of the `packages` parameter. Attackers can exploit this flaw to include arbitrary local files without authentication.
- *Severity: Rated as HIGH with a CVSS v3.1 score of 7.5.
- *Impact: This vulnerability can lead to unauthorized access to sensitive information stored on the server, posing a significant risk to data security.
CVE-2024-33533: Reflected Cross-Site Scripting (XSS)
*Overview: This reflected XSS vulnerability is found in the Zimbra webmail admin interface, resulting from inadequate input validation of the `packages` parameter. An attacker can inject and execute arbitrary JavaScript code within the context of another user's session.
- *Severity: Rated as MEDIUM with a CVSS v3.1 score of 5.4.
- *Impact: Similar to CVE-2024-33536, this vulnerability can lead to session hijacking and unauthorized actions, compromising user security.
CVE-2024-27443: XSS in CalendarInvite Feature
*Overview: CVE-2024-27443 is another XSS vulnerability affecting the CalendarInvite feature of the Zimbra webmail classic user interface. It results from improper input validation in handling calendar headers.
- *Severity: Rated as MEDIUM with a CVSS v3.1 score of 6.1.
- *Impact: Attackers can exploit this vulnerability by sending crafted email messages, leading to the execution of arbitrary JavaScript code when victims view these messages.
Conclusion
The vulnerabilities in Zimbra Collaboration Suite highlight the importance of maintaining robust security practices. Organizations using ZCS should prioritize updating their systems to the latest versions, which may include patches addressing these vulnerabilities. Additionally, implementing strict access controls, monitoring for suspicious activity, and conducting regular security audits will help mitigate the risks associated with these vulnerabilities.