Allegra extractFileFromZip Directory Traversal Remote Code Execution Vulnerability

April 24th, 2025
ZDI-25-254 ZDI-CAN-26524

CVE ID

CVE-2025-3485

CVSS Score

7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Allegra

Affected Products

Allegra

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Authentication is required to exploit this vulnerability.

The specific flaw exists within the implementation of the extractFileFromZip method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

Allegra has issued an update to correct this vulnerability. More details can be found at:
https://alltena.com/en/resources/release-notes/release-notes-for-release-8-1-2

Disclosure Timeline

  • 2025-04-02 - Vulnerability reported to vendor
  • 2025-04-24 - Coordinated public release of advisory
  • 2025-06-06 - Advisory Updated

Credit

hoan.pk

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