Critical Security Flaws Addressed by Zimbra in Collaboration Software
Zimbra has announced essential software updates aimed at rectifying significant security vulnerabilities present in its Collaboration software. If exploited, these vulnerabilities could lead to unauthorized information disclosure under specific conditions, posing a serious risk to user data.
One notable vulnerability, tracked as CVE-2025-25064, has been assigned a high CVSS score of 9.8 out of 10. This vulnerability has been categorized as an SQL injection issue affecting the ZimbraSync Service SOAP endpoint, particularly in versions prior to 10.0.12 and 10.1.4. The root of this vulnerability lies in the insufficient sanitization of user-supplied parameters, which can potentially allow authenticated attackers to execute arbitrary SQL, extracting sensitive email metadata by manipulating specific request parameters.
In addition to addressing this critical SQL injection flaw, Zimbra has also resolved another major concern related to stored cross-site scripting (XSS) within the Zimbra Classic Web Client. While this vulnerability does not yet have a CVE identifier, Zimbra has indicated that its resolution strengthens input sanitization protocols and enhances overall security. This fix has been implemented in versions 9.0.0 Patch 44, 10.0.13, and 10.1.5.
Another vulnerability that Zimbra has tackled is CVE-2025-25065, which carries a CVSS score of 5.3. This medium-severity server-side request forgery (SSRF) vulnerability affects the RSS feed parser component, enabling unauthorized redirection to internal network endpoints. Such an attack could compromise network integrity and overall system security. This flaw has been corrected in versions 9.0.0 Patch 43, 10.0.12, and 10.1.4.
Business owners utilizing Zimbra Collaboration are strongly encouraged to update to the latest software versions to safeguard against these vulnerabilities. By adopting these updates, organizations can effectively minimize their exposure to potential cyber threats.
The implications of these vulnerabilities highlight the importance of robust cybersecurity measures, particularly in ensuring proper input sanitization to thwart SQL injection and XSS attacks. Techniques that may have been employed in these scenarios fall under the MITRE ATT&CK framework, particularly in areas such as initial access through manipulation of inputs, persistence via exploited software features, and privilege escalation from unauthorized data access.
As Zimbra continues to address these critical security flaws, it serves as a crucial reminder for businesses to remain vigilant and proactive in their cybersecurity strategies. Regular software updates, coupled with thorough security assessments, are essential in mitigating the risks associated with evolving cyber threats.
