CVE-2012-2352 in sympa
Summary
by MITRE
The archive management (arc_manage) page in wwsympa/wwsympa.fcgi.in in Sympa before 6.1.11 does not check permissions, which allows remote attackers to list, read, and delete arbitrary list archives via vectors related to the (1) do_arc_manage, (2) do_arc_download, or (3) do_arc_delete functions.
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Analysis
by VulDB Data Team • 01/02/2025
The vulnerability identified as CVE-2012-2352 represents a critical authorization flaw in the Sympa mailing list management system, specifically affecting versions prior to 6.1.11. This issue resides within the archive management functionality of the wwsympa web interface, where the system fails to properly validate user permissions before executing archive operations. The flaw manifests through three distinct function vectors: do_arc_manage, do_arc_download, and do_arc_delete, each of which can be exploited by unauthenticated or unauthorized users to gain access to sensitive archive data. The vulnerability stems from inadequate input validation and access control mechanisms that should have prevented arbitrary file operations on list archives.
The technical implementation of this vulnerability allows remote attackers to bypass normal authentication and authorization checks that should normally restrict access to list archives. When users interact with the archive management page, the system does not properly verify whether the requesting user possesses the necessary privileges to perform operations such as listing archive contents, downloading archive files, or deleting archive entries. This lack of permission checking creates a direct path for malicious actors to enumerate, access, and manipulate archive data that should only be available to authorized list administrators or moderators. The flaw essentially provides a backdoor into the archive management subsystem that operates independently of normal user authentication flows.
From an operational impact perspective, this vulnerability presents significant security risks to organizations relying on Sympa for mailing list management. Attackers could potentially access sensitive mailing list archives containing confidential communications, personal information, or proprietary data shared among list members. The ability to delete archives could result in permanent data loss, while listing and reading capabilities could enable information disclosure attacks that compromise the privacy of mailing list participants. Organizations using affected versions of Sympa face potential compliance violations and data breach risks, particularly in regulated environments where mailing list data must be protected. The vulnerability also undermines the integrity of the mailing list system by allowing unauthorized modification of archive content.
The vulnerability aligns with CWE-285, which describes improper authorization issues in software systems, and represents a classic example of insufficient access control. From an attack framework perspective, this vulnerability maps to multiple ATT&CK techniques including T1078 for valid accounts usage and T1566 for credential harvesting, as attackers could exploit this weakness to gain unauthorized access to sensitive data. Organizations should implement immediate mitigations including upgrading to Sympa version 6.1.11 or later, where proper permission checking has been implemented. Additional protective measures include restricting network access to the affected web interface, implementing network segmentation, and conducting thorough security audits of all web applications to identify similar authorization flaws. The vulnerability demonstrates the critical importance of proper input validation and access control implementation in web applications, particularly those handling sensitive data such as mailing list communications.