Medium severity · published Feb 8, 2017
CVE-2017-5933
Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 randomly generates GCM nonces, which makes it…
5.9
CVSS
3.2%
EPSS
No
On KEV
Description
Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 randomly generates GCM nonces, which makes it marginally easier for remote attackers to obtain the GCM authentication key and spoof data by leveraging a reused nonce in a session and a "forbidden attack," a similar issue to CVE-2016-0270.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
Netscaler Application Delivery Controller Firmware · Citrix
through 10.5.65.11; through 11.0.69.12; through 11.1.51.21 · source: NVD
Affected product
NA
Netscaler Application Delivery Controller Firmware
Citrix
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-5933
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-5933
Third Party Advisory
http://www.securityfocus.com/bid/96151
Third Party Advisory
https://github.com/nonce-disrespect/nonce-disrespect
Vendor Advisory
https://support.citrix.com/article/CTX220329
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