CVE-2022-32564 in Server
Summary
by MITRE • 06/14/2022
An issue was discovered in Couchbase Server before 7.0.4. In couchbase-cli, server-eshell leaks the Cluster Manager cookie.
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Analysis
by VulDB Data Team • 06/14/2022
The vulnerability identified as CVE-2022-32564 affects Couchbase Server versions prior to 7.0.4 and specifically involves the couchbase-cli tool's server-eshell component. This issue represents a critical security flaw that exposes sensitive authentication credentials through improper handling of cluster management cookies. The vulnerability stems from insufficient protection mechanisms within the command-line interface tool that manages Couchbase server clusters, creating an avenue for unauthorized access to cluster administrative functions.
The technical flaw manifests when the couchbase-cli tool executes server-eshell commands, which inadvertently expose the Cluster Manager cookie through improper output handling or logging mechanisms. This cookie serves as a critical authentication token that grants administrative privileges within the Couchbase cluster, effectively providing attackers with elevated access to cluster management functions. The vulnerability falls under the category of credential leakage, where sensitive authentication information is unintentionally exposed to unauthorized parties. This type of flaw is classified as CWE-200 in the Common Weakness Enumeration catalog, which specifically addresses information exposure vulnerabilities that can lead to unauthorized access to systems.
The operational impact of this vulnerability is severe and multifaceted. An attacker who successfully exploits this issue gains access to cluster management capabilities, potentially allowing them to modify cluster configurations, add or remove nodes, access sensitive data stored within the cluster, and perform other administrative functions that could compromise the entire system. The exposure of the Cluster Manager cookie effectively undermines the security model of the Couchbase cluster, as it provides a direct path to administrative privileges without requiring additional authentication factors. This vulnerability can be exploited remotely, making it particularly dangerous in networked environments where cluster management tools are accessible over the network.
Organizations affected by this vulnerability should immediately upgrade to Couchbase Server version 7.0.4 or later, which contains the necessary patches to address the cookie leakage issue. Additionally, system administrators should implement network segmentation to limit access to cluster management interfaces, employ multi-factor authentication mechanisms where available, and conduct thorough security audits to identify any potential exploitation attempts. The remediation process should include monitoring for unauthorized access attempts and reviewing cluster logs for signs of compromise. This vulnerability aligns with tactics described in the MITRE ATT&CK framework under the privilege escalation and credential access domains, specifically targeting the use of valid credentials to gain higher privileges within the system.