Advisory Details

February 9th, 2024

Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability

ZDI-24-110
ZDI-CAN-22361

CVE ID CVE-2023-51639
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 bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the downloadExportedChart action. 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 bypass authentication on the system.

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
  • 2023-11-03 - Vulnerability reported to vendor
  • 2024-02-09 - Coordinated public release of advisory
  • 2024-07-01 - Advisory Updated
CREDIT 06fe5fd2bc53027c4a3b7e395af0b850e7b8a044
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