Critical Security Flaws in Zimbra Collaboration Software: Latest Updates and Vulnerabilities

2025-02-10

Zimbra, the popular collaboration software provider, has released updates addressing critical security vulnerabilities in its Collaboration platform. These flaws, if exploited, could lead to serious consequences, including unauthorized information disclosure. The identified vulnerabilities, affecting versions prior to Zimbra 10.0.12 and 10.1.4, cover multiple attack vectors, including SQL injection, cross-site scripting (XSS), and server-side request forgery (SSRF). Below is an overview of these security issues and the necessary steps to mitigate potential risks.

Zimbra has issued software updates to address critical security vulnerabilities that could result in information exposure if exploited. Among these flaws, CVE-2025-25064, with a CVSS score of 9.8, stands out as a severe SQL injection vulnerability in the ZimbraSync Service SOAP endpoint. This flaw impacts versions earlier than 10.0.12 and 10.1.4. Attackers could exploit this issue by injecting arbitrary SQL queries, potentially revealing email metadata due to insufficient sanitization of a user-supplied parameter.

Additionally, a stored cross-site scripting (XSS) vulnerability in the Zimbra Classic Web Client has been patched, though it hasn’t been assigned a CVE identifier yet. The update improves input sanitization to prevent XSS exploits. The flaw affects versions prior to 9.0.0 Patch 44, 10.0.13, and 10.1.5.

Another issue, CVE-2025-25065 (CVSS 5.3), is a medium-severity SSRF flaw in the RSS feed parser. This vulnerability could redirect requests to internal network endpoints, enabling unauthorized access. Zimbra has patched this flaw in versions 9.0.0 Patch 43, 10.0.12, and 10.1.4. Zimbra urges customers to upgrade to the latest versions to secure their systems and avoid potential exploitation.

What Undercode Says:

The recent security updates from Zimbra underscore the importance of proactive patching and maintaining updated software. Zimbra Collaboration, widely used in enterprise environments, serves as a key platform for email, calendar, and contact management. The critical vulnerabilities identified—SQL injection, cross-site scripting (XSS), and SSRF—are all serious concerns for organizations relying on the platform for communication and collaboration.

Let’s break down these flaws from an analytical perspective:

1. SQL Injection Vulnerability (CVE-2025-25064):

SQL injection remains one of the most dangerous web vulnerabilities, allowing attackers to manipulate a system’s database through unsanitized input. In this case, the ZimbraSync Service SOAP endpoint fails to properly sanitize a user-supplied parameter. Exploiting this flaw could allow an attacker to access sensitive email metadata, potentially exposing a wealth of personal and business information. The CVSS score of 9.8 reflects the criticality of this issue, as it could lead to full database compromise if not addressed. The fact that this flaw affects multiple Zimbra versions (prior to 10.0.12 and 10.1.4) means that a large number of users may still be vulnerable.

Cross-Site Scripting (XSS) Vulnerability in Zimbra Classic Web Client:
Cross-site scripting (XSS) vulnerabilities can have wide-reaching impacts, especially in environments where users interact with web applications on a regular basis. In this case, the XSS vulnerability was identified in the Zimbra Classic Web Client, enabling attackers to inject malicious scripts into a user’s browser. This could potentially lead to credential theft, unauthorized access to user accounts, or the spread of malware. While this flaw does not yet have a CVE identifier, the patch addressing it improves input sanitization—critical in preventing such attacks.

3. Server-Side Request Forgery (SSRF) Flaw (CVE-2025-25065):

SSRF vulnerabilities allow attackers to manipulate server-side applications into making requests to internal resources that should not be accessible externally. In this case, the flaw lies within the RSS feed parser, which can be exploited to redirect requests to internal endpoints, potentially leaking sensitive data or enabling further attacks within an organization’s internal network. While the severity is medium (CVSS 5.3), it’s still a concerning issue for any organization relying on Zimbra for its internal communications.

The rapid identification and patching of these vulnerabilities by Zimbra demonstrate their commitment to security. However, these flaws also highlight the broader issue of securing collaboration platforms, which often become prime targets due to the sensitive nature of the data they handle. Given the widespread use of Zimbra in various industries, the patched vulnerabilities emphasize the critical need for constant vigilance and timely software updates.

For organizations that rely on Zimbra, the recommended course of action is clear: immediately upgrade to the latest versions (9.0.0 Patch 44, 10.0.13, and 10.1.5) to mitigate the risks posed by these flaws. Regular patching is a key component of any cybersecurity strategy, particularly for platforms that serve as gateways to sensitive organizational data.

In conclusion, while Zimbra’s quick response to these vulnerabilities is commendable, the flaws uncovered serve as a stark reminder that software, especially collaboration tools, can have hidden vulnerabilities that need constant attention. As more organizations shift towards digital collaboration, the importance of secure, well-maintained software cannot be overstated.

References:

Reported By: https://thehackernews.com/2025/02/zimbra-releases-security-updates-for.html
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