search menu icon-carat-right cmu-wordmark

CERT Coordination Center

Datalex airline booking software allowed authorization bypass for arbitrary users

Vulnerability Note VU#693036

Original Release Date: 2015-09-30 | Last Revised: 2015-09-30


Datalex provides a suite of software offerings for the airline industry which supports a customizable flight browsing, booking, payment, and analytics. The Datalex airline booking software contained an error in its error handling routines which allows authorization bypass and loss of confidentiality for arbitrary users.


CWE-639: Authorization Bypass Through User-Controlled Key - CVE-2015-2858

By modifying HTTP POST parameters, an attacker may cause the Datalex application to return null values when querying data from the database. The application error handling enters a failed state due to the null value, allowing an attacker to hijack an account of choice through modification of the profileId parameter via a POST action to and


This vulnerability may have resulted in complete loss of confidentiality of all user data, as well as allow unauthenticated remote users the ability to modify arbitrary user data. The full impact may depend on server settings, which may vary between individual instances of the Datalex software suite.


Updated applied already, no action required

Datalex has confirmed this issue and has worked with all affected airlines to update their software. According to Datalex, all affected airlines have deployed the update as of September 3rd, 2015.

Vendor Information


Datalex Affected

Notified:  May 12, 2015 Updated: June 03, 2015



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group Score Vector
Base 7.8 AV:N/AC:L/Au:N/C:C/I:N/A:N
Temporal 6.4 E:F/RL:OF/RC:C
Environmental 6.4 CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND



Thanks to the reporter who wishes to remain anonymous. Thanks to Datalex for working quickly with us and affected vendors to address the issue.

This document was written by Garret Wassermann.

Other Information

CVE IDs: CVE-2015-2858
Date Public: 2015-09-30
Date First Published: 2015-09-30
Date Last Updated: 2015-09-30 22:25 UTC
Document Revision: 61

Sponsored by CISA.