CVE-2017-17549

moderate-risk
Published 2017-12-13

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 allow remote attackers to obtain sensitive information from the backend client TLS handshake by leveraging use of TLS with Client Certificates and a Diffie-Hellman Ephemeral (DHE) key exchange.

Do I need to act?

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0.64% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (8)

Affected Vendors

Citrix

References (6)

Third Party Advisory http://www.securityfocus.com/bid/102177
Third Party Advisory http://www.securitytracker.com/id/1040011
Vendor Advisory https://support.citrix.com/article/ctx230612
Third Party Advisory http://www.securityfocus.com/bid/102177
Third Party Advisory http://www.securitytracker.com/id/1040011
Vendor Advisory https://support.citrix.com/article/ctx230612
34
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 14/34 · Moderate