Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability

February 9th, 2024
ZDI-24-106 ZDI-CAN-22505

CVE ID

CVE-2023-51641

CVSS Score

9.8 AV:N/AC:L/PR:N/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. Although authentication is required to exploit this vulnerability, product implements a registration mechanism that can be used to create a user with a sufficient privilege level.

The specific flaw exists within the renderFieldMatch method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE.

Additional Details

Allegra has issued an update to correct this vulnerability. More details can be found at:
https://www.trackplus.com/en/service/release-notes-reader/7-5-1-release-notes-2.html

Disclosure Timeline

  • 2023-12-06 - Vulnerability reported to vendor
  • 2024-02-09 - Coordinated public release of advisory
  • 2024-07-01 - Advisory Updated

Credit

06fe5fd2bc53027c4a3b7e395af0b850e7b8a044

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