Session Fixation Issue in Mailcow Web Panel

CVE-2024-56529

What is CVE-2024-56529?

CVE-2024-56529 is a critical vulnerability found in the Mailcow web panel, an open-source email suite that provides various services, including email hosting and management. This vulnerability arises from a session fixation issue that permits remote attackers to manipulate session identifiers when HSTS (HTTP Strict Transport Security) is disabled in a victim's browser. Consequently, after a legitimate user logs in, the attacker could exploit this flaw to access the user's web panel, compromising the security and integrity of sensitive email-related data within the organization.

Technical Details

The vulnerability exists in Mailcow through version 2024-11b, with the primary issue being that it allows an attacker to set a session identifier. This can happen if the victim's browser does not enforce HSTS, which is intended to protect against session hijacking. Once the user is authenticated, the attacker can use the same session identifier to gain unauthorized access to the user's account. This kind of vulnerability highlights potential weaknesses in the session management mechanisms of mail services and emphasizes the need for robust security protocols.

Potential Impact of CVE-2024-56529

1. Unauthorized Access: Attackers can gain control of user accounts within the Mailcow web panel, enabling them to view, modify, or delete sensitive information without user consent.

2. Data Breaches: The exploitation of this vulnerability could lead to severe data leaks, including exposure of private email communications, contacts, and other confidential information.

3. Service Interruption: Attackers could disrupt normal operations by altering configurations or locking out legitimate users, negatively impacting business continuity and productivity.

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References