CVE-2022-32565 in Server
Summary
by MITRE • 06/14/2022
An issue was discovered in Couchbase Server before 7.0.4. The Backup Service log leaks unredacted usernames and document ids.
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Analysis
by VulDB Data Team • 06/14/2022
The vulnerability identified as CVE-2022-32565 affects Couchbase Server versions prior to 7.0.4, specifically within the Backup Service component where sensitive information is inadvertently exposed through log files. This issue represents a critical security flaw that undermines the confidentiality of user data and system operations. The problem manifests when the backup service generates log entries containing unredacted usernames and document identifiers, creating potential attack vectors for malicious actors who gain access to these log files. Such exposure directly violates fundamental security principles by disclosing authentication credentials and data access patterns that should remain protected.
The technical implementation flaw stems from inadequate input sanitization and output formatting within the backup service logging mechanism. When backup operations occur, the system fails to properly redact or mask sensitive information before writing it to log files, resulting in plaintext exposure of user credentials and document identifiers. This vulnerability falls under the category of information disclosure, specifically addressing improper logging practices that expose sensitive data. The flaw demonstrates poor security engineering practices where the principle of least privilege is not properly enforced during log generation, allowing potentially sensitive operational data to persist in accessible log repositories.
The operational impact of this vulnerability extends beyond simple credential exposure, as it provides attackers with valuable reconnaissance information about system users and data structures. An attacker who gains access to backup logs can obtain usernames that may be used for targeted credential brute force attacks or social engineering operations. Document identifiers exposed through these logs reveal patterns in data access and storage, potentially enabling more sophisticated attacks against specific data assets. The vulnerability affects the entire backup ecosystem of Couchbase Server, making all backup operations potentially compromised and undermining the security posture of organizations relying on this database platform for critical data storage.
Organizations should immediately implement mitigations including upgrading to Couchbase Server version 7.0.4 or later, which contains the necessary patches to address the logging vulnerability. Additionally, administrators should review and implement proper log management practices including regular log rotation, access controls, and monitoring for unauthorized log file access. The implementation of centralized logging solutions with proper filtering mechanisms can help prevent sensitive information from being written to accessible log files. Security teams should also conduct comprehensive audits of existing log files to identify any potential exposure of sensitive data and implement automated scanning tools to detect similar issues in other system components. This vulnerability highlights the importance of following security standards such as those defined in CWE-200 for information disclosure and ATT&CK techniques related to credential access and reconnaissance activities.