Security vulnerabilities in Citrix Access Gateway standard edition

Three security vulnerabilities have been identified in Access Gateway Standard Edition:

    • Directory traversal in Access Gateway Standard Edition 5.0.x prior to version 5.0.4 (critical severity)

    • Access Gateway Standard Edition 5.0.x can act as an open proxy (high severity)

    • Text content injection in Access Gateway Standard Edition 5.0.3 and 5.0.4 (low severity)

Access Gateway Standard Edition versions 4.5.x and 4.6.x and currently supported versions of NetScaler Access Gateway Enterprise Edition are not affected by these vulnerabilities.

What Customers Should Do

A patch for version 5.0.4 of the Access Gateway Standard Edition firmware has been released to address these vulnerabilities. Citrix strongly recommends that all customers using affected versions of Access Gateway Standard Edition apply this patch to their appliances as soon as possible. This patch can be found at the following location:

What Citrix Is Doing

Citrix is notifying customers and channel partners about this potential security issue. This article is also available from the Citrix Knowledge Center at

Obtaining Support on This Issue

If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at

Reporting Security Vulnerabilities to Citrix

Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. If you would like to report a security issue to Citrix, please compose an e-mail to stating the exact version of the product in which the vulnerability was found and the steps needed to reproduce the vulnerability.

Read the original KB article here.

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