Nonce Generation Flaws in Citrix NetScaler ADC and Gateway
CVE-2017-5933

5.9MEDIUM

Key Information:

Vendor
Citrix
Status
Netscaler Application Delivery Controller Firmware
Vendor
CVE Published:
8 February 2017

Summary

The Citrix NetScaler ADC and NetScaler Gateway contain a vulnerability in the GCM nonce generation mechanism. This issue arises from the generation of nonces that can be reused across sessions, making it easier for remote attackers to spoof data transmissions by leveraging these reused nonces. The flaw creates avenues for 'forbidden attacks,' which may compromise the integrity of data during transmission by allowing malicious actors to obtain authentication keys.

References

https://github.com/nonce-disrespect/nonce-disrespect
x_refsource_MISC
https://support.citrix.com/article/CTX220329
x_refsource_CONFIRM
http://www.securityfocus.com/bid/96151
vdb-entryx_refsource_BID

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.