Allegra unzipFile Directory Traversal Remote Code Execution Vulnerability

The vulnerability lies within the unzipFile method, where insufficient validation of user-supplied paths allows an attacker to manipulate file operations. Successful exploitation enables an attacker to execute code in the context of the LOCAL SERVICE account, granting them significant control over the affected system. This could lead to data breaches, system compromise, and potential lateral movement within the network. The ability to execute code as LOCAL SERVICE elevates the potential impact, as this account often has elevated privileges.

Organizations utilizing Allegra versions 7.5.1.9 through 7.5.1.9, particularly those with publicly accessible instances or those lacking robust authentication controls, are at risk. Shared hosting environments using Allegra are also potentially vulnerable.

1. 2024-11-22Disclosure

   disclosure

1. Reserviert2024-05-31
2. Veröffentlicht2024-11-22
3. Geändert2024-11-25
4. EPSS aktualisiert2026-04-02

The primary mitigation for CVE-2024-5581 is to upgrade Allegra to version 7.5.2 or later, which includes the necessary path validation fixes. If immediate upgrading is not feasible, consider implementing stricter access controls to limit who can interact with the unzipFile functionality. While a direct WAF rule is difficult to implement without specific knowledge of the attack payload, monitoring for unusual file access patterns and suspicious network connections originating from the Allegra process can provide early detection. After upgrading, confirm the fix by attempting to trigger the vulnerable unzipFile method with a malicious path; the operation should now be rejected.