Advisory Details

February 9th, 2024

Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-24-105
ZDI-CAN-22506

CVE ID CVE-2023-51642
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 loadFieldMatch 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
  • 2024-05-31 - Advisory Updated
CREDIT 06fe5fd2bc53027c4a3b7e395af0b850e7b8a044
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