Vulnerability Note VU#693036
Datalex airline booking software allowed authorization bypass for arbitrary users
Original Release date: 30 Sep 2015 | Last revised: 30 Sep 2015

Overview
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.

Description
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 ValidateFormAction.do and ProfileConfirmEditAddressAction.do.

Impact
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.

Solution
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 (Learn More)

VendorStatusDate NotifiedDate UpdatedDatalexAffected11 May 201503 Jun 2015If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

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

References

http://cwe.mitre.org/data/definitions/639.html

Credit

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:
30 Sep 2015

Date First Published:
30 Sep 2015

Date Last Updated:
30 Sep 2015

Document Revision:
59

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