A newly disclosed Server-Side Request Forgery (SSRF) flaw in Zimbra Collaboration Suite has raised major security concerns, prompting administrators to patch systems immediately.
The issue, identified in the chat proxy configuration component, could allow attackers to gain unauthorized access to internal resources and sensitive user data.
According to Zimbra’s latest advisory, this critical SSRF vulnerability affects Zimbra versions 10.1.5 through 10.1.11. Malicious actors could exploit the issue by manipulating URL requests to make the server perform unintended actions, such as accessing restricted endpoints or internal systems.
Although the deployment risk is categorized as low, the security severity is classified as high due to the potential data exposure and privilege abuse.
The vulnerability stems from improper validation in the chat proxy configuration module, which could enable crafted requests to route through Zimbra’s internal network.
This vector might allow attackers to retrieve configuration files, tokens, or other sensitive data stored in connected services, posing a significant privacy risk for enterprise users who rely on Zimbra for email and collaboration.
Mitigations
Zimbra has released version 10.1.12, which patches the SSRF flaw and introduces several performance stability updates. Administrators are strongly advised to review the Zimbra 10.1.12 Release Notes and deploy the newest update as soon as possible to prevent exploitation.
Security teams should also verify system integrity following patch installation and monitor access logs for any suspicious or unauthorized internal requests that might indicate prior compromise.
Applying the latest update not only mitigates this SSRF threat but also enhances Zimbra’s overall resilience and performance.
Regular patch maintenance, combined with proper configuration hardening, remains the best defense against evolving threat vectors targeting enterprise collaboration platforms.
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