Notified:  March 15, 2013 Updated: April 25, 2013

Status

Affected

Vendor Statement

A new version of the NetScaler appliance firmware has been released to address this vulnerability. Citrix strongly recommends that affected customers upgrade their appliances to version 9.3.62.x or later as soon as possible. Customers using NetScaler Access Gateway Enterprise Edition in the Common Criteria evaluated configuration should upgrade to 9.3.53.6. These new firmware versions can be downloaded from the Citrix website at the following location: https://www.citrix.com/downloads/netscaler-adc/firmware.html Customers using NetScaler appliance firmware versions up to and including 10.0.74.4 in a double hop deployment should apply the following configuration change from the NSCLI: >add ns acl allowedHost ALLOW -srcIP -destIP -priority 10 #permit traffic only from the AGEE appliance in the first DMZ >enable ns acl allowedHost >add ns acl denyAll DENY -srcIP 0.0.0.0 - 255.255.255.255 -destIP -priority 20 #block everything else >enable ns acl denyAll >apply ns acls

Vendor Information

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

Vendor References

• https://www.citrix.com/downloads/netscaler-adc/firmware.html
• http://support.citrix.com/article/ctx137238