Information disclosure in Citrix Netscaler Application Delivery Controller Firmware
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 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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.032 (88.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/nonce-disrespect/nonce-disrespect (Third Party Advisory)
- support.citrix.com/article/CTX220329 (Vendor Advisory)
- www.securityfocus.com/bid/96151 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-5933?
- CVE-2017-5933 is a medium-severity vulnerability in Citrix Netscaler Application Delivery Controller Firmware, classified under Information Disclosure. CVSS score: 5.9/10. Published 2017-02-08.
- How severe is CVE-2017-5933?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2017-5933 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.