CVE-2002-0324 in Graymatter
Summary
by MITRE
Greymatter 1.21c and earlier with the Bookmarklet feature enabled allows remote attackers to read a cleartext password and gain administrative privileges by guessing the name of a gmrightclick-*.reg file which contains the administrator name and password in cleartext, then retrieving the file from the web server before the Greymatter administrator performs a "Clear And Exit" action.
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Analysis
by VulDB Data Team • 09/19/2025
The vulnerability described in CVE-2002-0324 represents a critical security flaw in Greymatter 1.21c and earlier versions that leverages improper access control and insecure credential storage practices. This issue specifically affects systems where the Bookmarklet feature is enabled, creating an attack surface that allows remote adversaries to escalate privileges through a methodical process of credential reconnaissance and exploitation. The vulnerability stems from the insecure handling of administrative credentials within the web application's file system structure.
The technical implementation of this vulnerability involves the predictable naming convention of registry files that contain cleartext administrative credentials. Attackers can systematically guess the filename pattern gmrightclick-*.reg where the asterisk represents a predictable sequence or identifier, allowing them to enumerate and retrieve these files from the web server. The cleartext storage of administrator passwords in these registry files directly violates fundamental security principles of credential protection and represents a classic example of weak cryptographic practices. This vulnerability operates at the application layer and demonstrates poor input validation and access control mechanisms that fail to properly protect sensitive configuration files.
The operational impact of this vulnerability extends far beyond simple credential theft, as it provides attackers with full administrative control over affected Greymatter installations. Once the cleartext password is obtained through the registry file retrieval, attackers can perform any administrative action within the application, including modifying content, altering user permissions, installing malicious software, and potentially using the compromised system as a pivot point for further network infiltration. The timing aspect of this vulnerability is particularly concerning as it requires the attacker to retrieve the file before the administrator performs a "Clear And Exit" action, indicating a window of opportunity that could be exploited during routine administrative operations.
This vulnerability aligns with multiple CWE classifications including CWE-259 Weak Passwords, CWE-522 Insufficiently Protected Credentials, and CWE-287 Improper Certificate Validation. The attack pattern follows elements of the MITRE ATT&CK framework under T1566 Credential Access and T1078 Valid Accounts, as it exploits legitimate administrative credentials through predictable file naming and insecure storage mechanisms. Organizations using vulnerable versions of Greymatter face significant risk of unauthorized access and potential data compromise, particularly in environments where administrative credentials are not properly protected or rotated. The vulnerability demonstrates how legacy web applications often contain fundamental security flaws that persist due to inadequate security testing and code review processes.
The recommended mitigations for this vulnerability include immediate patching of Greymatter installations to versions that address the insecure credential storage issue, implementing proper access controls for sensitive files, and ensuring that administrative credentials are stored using strong encryption rather than cleartext formats. Organizations should also implement file access monitoring to detect unauthorized attempts to retrieve sensitive configuration files and establish proper credential management practices including regular credential rotation and the use of strong authentication mechanisms. Network segmentation and intrusion detection systems can provide additional layers of protection against exploitation attempts targeting this specific vulnerability pattern.